formbook | 54d08c079e162698607d24a232cc8b51ea0cecf8df1d6fefa27726041e2cd366

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
07-09-2023 11:07

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General

Target

tmp.exe
Size

598KB
MD5

5a8637cc62a5884edc586b690d0bac10
SHA1

33ff0da34d35ef8051d5c88641502ee7bf2f0333
SHA256

54d08c079e162698607d24a232cc8b51ea0cecf8df1d6fefa27726041e2cd366
SHA512

818ea5ef21b7bb392cdd17bd9f0878cf1caa27d1d5a0e1fd8d05a22da73f3cf0859a97b0ad7ea0bc17ef8b83fba2eb93322b79a607676861abc308182db1764f
SSDEEP

12288:BsniF9L2hCugpGy1Md/VmA01Z0/ROPRfxzIZp+kD/etaJedzY+GG:BsniKhjo1K/V01ZKRWPEX+K/jJed0+r

Score

10^/10

formbook oi24 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

oi24

Decoy

sorterexpo.com

50imty.xyz

biscotrucking.com

urawep.xyz

parthaviorganic.com

quali-con.com

wgimawmo.click

19829e.com

wendywardband.com

peraepin.com

wintercot.com

cqfvnzlk.click

furar.top

fcvorbww.click

gazetarendaextra.com

bakerstack.com

plant-nursery-boweco.com

30235p.com

sartensaludable.com

dalmatiangarden.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1324-26-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1324-43-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1324-72-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4644-80-0x0000000000F00000-0x0000000000F2F000-memory.dmp	formbook
behavioral2/memory/4644-82-0x0000000000F00000-0x0000000000F2F000-memory.dmp	formbook

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

tmp.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2474409663-2236862430-1045297337-1000\Control Panel\International\Geo\Nation tmp.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2474409663-2236862430-1045297337-1000\Control Panel\International\Geo\Nation	tmp.exe

Drops file in System32 directory 1 IoCs

Processes:

svchost.exe

description	ioc	process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{10900B55-8BAE-42B0-A9E1-FD13D9D29A31}.catalogItem	svchost.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

tmp.exetmp.exemsdt.exe

description	pid	process	target process
PID 1960 set thread context of 1324	1960	tmp.exe	tmp.exe
PID 1324 set thread context of 3252	1324	tmp.exe	Explorer.EXE
PID 1324 set thread context of 3252	1324	tmp.exe	Explorer.EXE
PID 4644 set thread context of 3252	4644	msdt.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

1832 schtasks.exe

pid	process
1832	schtasks.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Suspicious behavior: EnumeratesProcesses 46 IoCs

Processes:

powershell.exetmp.exemsdt.exe

pid	process
2652	powershell.exe
1324	tmp.exe
1324	tmp.exe
1324	tmp.exe
1324	tmp.exe
2652	powershell.exe
1324	tmp.exe
1324	tmp.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe
4644	msdt.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3252 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

tmp.exemsdt.exe

pid process

1324 tmp.exe
1324 tmp.exe
1324 tmp.exe
1324 tmp.exe
4644 msdt.exe
4644 msdt.exe

pid	process
3252	Explorer.EXE

pid	process
1324	tmp.exe
1324	tmp.exe
1324	tmp.exe
1324	tmp.exe
4644	msdt.exe
4644	msdt.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

Processes:

powershell.exetmp.exeExplorer.EXEmsdt.exe

description	pid	process
Token: SeDebugPrivilege	2652	powershell.exe
Token: SeDebugPrivilege	1324	tmp.exe
Token: SeShutdownPrivilege	3252	Explorer.EXE
Token: SeCreatePagefilePrivilege	3252	Explorer.EXE
Token: SeDebugPrivilege	4644	msdt.exe
Token: SeShutdownPrivilege	3252	Explorer.EXE
Token: SeCreatePagefilePrivilege	3252	Explorer.EXE
Token: SeShutdownPrivilege	3252	Explorer.EXE
Token: SeCreatePagefilePrivilege	3252	Explorer.EXE
Token: SeShutdownPrivilege	3252	Explorer.EXE
Token: SeCreatePagefilePrivilege	3252	Explorer.EXE
Token: SeShutdownPrivilege	3252	Explorer.EXE
Token: SeCreatePagefilePrivilege	3252	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid process

3252 Explorer.EXE

pid	process
3252	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

tmp.exeExplorer.EXEmsdt.exe

description	pid	process	target process
PID 1960 wrote to memory of 2652	1960	tmp.exe	powershell.exe
PID 1960 wrote to memory of 2652	1960	tmp.exe	powershell.exe
PID 1960 wrote to memory of 2652	1960	tmp.exe	powershell.exe
PID 1960 wrote to memory of 1832	1960	tmp.exe	schtasks.exe
PID 1960 wrote to memory of 1832	1960	tmp.exe	schtasks.exe
PID 1960 wrote to memory of 1832	1960	tmp.exe	schtasks.exe
PID 1960 wrote to memory of 1324	1960	tmp.exe	tmp.exe
PID 1960 wrote to memory of 1324	1960	tmp.exe	tmp.exe
PID 1960 wrote to memory of 1324	1960	tmp.exe	tmp.exe
PID 1960 wrote to memory of 1324	1960	tmp.exe	tmp.exe
PID 1960 wrote to memory of 1324	1960	tmp.exe	tmp.exe
PID 1960 wrote to memory of 1324	1960	tmp.exe	tmp.exe
PID 3252 wrote to memory of 4644	3252	Explorer.EXE	msdt.exe
PID 3252 wrote to memory of 4644	3252	Explorer.EXE	msdt.exe
PID 3252 wrote to memory of 4644	3252	Explorer.EXE	msdt.exe
PID 4644 wrote to memory of 1928	4644	msdt.exe	cmd.exe
PID 4644 wrote to memory of 1928	4644	msdt.exe	cmd.exe
PID 4644 wrote to memory of 1928	4644	msdt.exe	cmd.exe

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3252

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1960

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\NRGdELGVSZiWc.exe"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2652

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NRGdELGVSZiWc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp22F4.tmp"
3⤵
- Creates scheduled task(s)
PID:1832

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1324

C:\Windows\SysWOW64\msdt.exe
"C:\Windows\SysWOW64\msdt.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4644

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
3⤵
PID:1928

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:4224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rl1v3bft.z2z.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp22F4.tmp

Filesize
1KB

MD5
98a539f20904115bd929f1514aac9b8d

SHA1
78d90a0d08e9efb16a52b4dc2a0a8a35b5f193f9

SHA256
5a3dad83ea823d76240e376d8b7887939c9ed10a20afdd5e7904387447d0b5bd

SHA512
967b5410e110b73d1b15f0f1d6008d37c233a6843411c3262a418454e05b5b9db6b61dbf82bde5df4ebf265bb7fe82803e3a91381ed876c108873ee63dc07138

Download Submit
memory/1324-73-0x0000000001B80000-0x0000000001B95000-memory.dmp

Filesize
84KB

Download
memory/1324-26-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1324-41-0x0000000001C00000-0x0000000001F4A000-memory.dmp

Filesize
3.3MB

Download
memory/1324-44-0x0000000001720000-0x0000000001735000-memory.dmp

Filesize
84KB

Download
memory/1324-43-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1324-72-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1960-4-0x0000000005300000-0x0000000005310000-memory.dmp

Filesize
64KB

Download
memory/1960-15-0x000000000A460000-0x000000000A4FC000-memory.dmp

Filesize
624KB

Download
memory/1960-14-0x0000000005300000-0x0000000005310000-memory.dmp

Filesize
64KB

Download
memory/1960-13-0x00000000743F0000-0x0000000074BA0000-memory.dmp

Filesize
7.7MB

Download
memory/1960-6-0x0000000005230000-0x000000000523A000-memory.dmp

Filesize
40KB

Download
memory/1960-3-0x0000000005190000-0x0000000005222000-memory.dmp

Filesize
584KB

Download
memory/1960-2-0x0000000005640000-0x0000000005BE4000-memory.dmp

Filesize
5.6MB

Download
memory/1960-1-0x00000000743F0000-0x0000000074BA0000-memory.dmp

Filesize
7.7MB

Download
memory/1960-28-0x00000000743F0000-0x0000000074BA0000-memory.dmp

Filesize
7.7MB

Download
memory/1960-0-0x0000000000710000-0x00000000007AA000-memory.dmp

Filesize
616KB

Download
memory/2652-40-0x00000000059E0000-0x0000000005A46000-memory.dmp

Filesize
408KB

Download
memory/2652-61-0x00000000064C0000-0x00000000064DE000-memory.dmp

Filesize
120KB

Download
memory/2652-29-0x0000000005760000-0x0000000005782000-memory.dmp

Filesize
136KB

Download
memory/2652-24-0x0000000002600000-0x0000000002610000-memory.dmp

Filesize
64KB

Download
memory/2652-25-0x0000000005080000-0x00000000056A8000-memory.dmp

Filesize
6.2MB

Download
memory/2652-23-0x0000000002600000-0x0000000002610000-memory.dmp

Filesize
64KB

Download
memory/2652-77-0x00000000743F0000-0x0000000074BA0000-memory.dmp

Filesize
7.7MB

Download
memory/2652-46-0x0000000005F20000-0x0000000005F3E000-memory.dmp

Filesize
120KB

Download
memory/2652-47-0x0000000002600000-0x0000000002610000-memory.dmp

Filesize
64KB

Download
memory/2652-48-0x00000000064E0000-0x0000000006512000-memory.dmp

Filesize
200KB

Download
memory/2652-49-0x0000000070CB0000-0x0000000070CFC000-memory.dmp

Filesize
304KB

Download
memory/2652-50-0x00000000743F0000-0x0000000074BA0000-memory.dmp

Filesize
7.7MB

Download
memory/2652-60-0x000000007EE20000-0x000000007EE30000-memory.dmp

Filesize
64KB

Download
memory/2652-35-0x0000000005800000-0x0000000005866000-memory.dmp

Filesize
408KB

Download
memory/2652-62-0x0000000007860000-0x0000000007EDA000-memory.dmp

Filesize
6.5MB

Download
memory/2652-63-0x0000000007220000-0x000000000723A000-memory.dmp

Filesize
104KB

Download
memory/2652-64-0x0000000002600000-0x0000000002610000-memory.dmp

Filesize
64KB

Download
memory/2652-65-0x0000000007290000-0x000000000729A000-memory.dmp

Filesize
40KB

Download
memory/2652-66-0x00000000074A0000-0x0000000007536000-memory.dmp

Filesize
600KB

Download
memory/2652-67-0x0000000002600000-0x0000000002610000-memory.dmp

Filesize
64KB

Download
memory/2652-68-0x0000000007450000-0x000000000745E000-memory.dmp

Filesize
56KB

Download
memory/2652-69-0x0000000007560000-0x000000000757A000-memory.dmp

Filesize
104KB

Download
memory/2652-70-0x0000000007540000-0x0000000007548000-memory.dmp

Filesize
32KB

Download
memory/2652-22-0x00000000743F0000-0x0000000074BA0000-memory.dmp

Filesize
7.7MB

Download
memory/2652-20-0x0000000002610000-0x0000000002646000-memory.dmp

Filesize
216KB

Download
memory/3252-74-0x00000000092A0000-0x0000000009380000-memory.dmp

Filesize
896KB

Download
memory/3252-106-0x0000000001410000-0x0000000001420000-memory.dmp

Filesize
64KB

Download
memory/3252-166-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-164-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-160-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-162-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-149-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-83-0x00000000092A0000-0x0000000009380000-memory.dmp

Filesize
896KB

Download
memory/3252-146-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-86-0x00000000094C0000-0x000000000963E000-memory.dmp

Filesize
1.5MB

Download
memory/3252-87-0x00000000094C0000-0x000000000963E000-memory.dmp

Filesize
1.5MB

Download
memory/3252-89-0x00000000094C0000-0x000000000963E000-memory.dmp

Filesize
1.5MB

Download
memory/3252-91-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-92-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-93-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-94-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-95-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-96-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-97-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-99-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-101-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-102-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-103-0x0000000001410000-0x0000000001420000-memory.dmp

Filesize
64KB

Download
memory/3252-45-0x00000000033D0000-0x000000000349A000-memory.dmp

Filesize
808KB

Download
memory/3252-105-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-107-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-104-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-109-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-113-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-111-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-115-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-116-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-117-0x0000000001410000-0x0000000001420000-memory.dmp

Filesize
64KB

Download
memory/3252-119-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-118-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-120-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-122-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-132-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-135-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-137-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-139-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3252-141-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/4644-85-0x0000000002DA0000-0x0000000002E34000-memory.dmp

Filesize
592KB

Download
memory/4644-82-0x0000000000F00000-0x0000000000F2F000-memory.dmp

Filesize
188KB

Download
memory/4644-81-0x0000000002FC0000-0x000000000330A000-memory.dmp

Filesize
3.3MB

Download
memory/4644-80-0x0000000000F00000-0x0000000000F2F000-memory.dmp

Filesize
188KB

Download
memory/4644-79-0x0000000000260000-0x00000000002B7000-memory.dmp

Filesize
348KB

Download
memory/4644-78-0x0000000000260000-0x00000000002B7000-memory.dmp

Filesize
348KB

Download