formbook | a8d97304d740bb44b27e40303d72326a34d30973e801161f4bf026fff552c1a8

General

Target

tmp.exe
Size

2.1MB
MD5

dc86d8c67a66d23d6cba86036dacd475
SHA1

3c803edc8f87f3c69c460ccf1255ed8c9c1651f6
SHA256

a8d97304d740bb44b27e40303d72326a34d30973e801161f4bf026fff552c1a8
SHA512

941b380f3c393ebb776b0d181b290550b528534f50b6bb55ada418f3639d8ccd07587303a7b680937c0b641e838cc2f98265d93f56d7bbcd9419e7a2512a69f3
SSDEEP

24576:MuOolI+AqJiMqbPf8/cEnn8jrO+jfn2QaRgRBmjb+Ba56r19EvAI3eQFZ:x3Aq0U/cbjjL2Q+gRBKyq6r19mAI3RF

Score

10^/10

formbook do25 persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

do25

Decoy

nickifarina.site

nfptrwge.bar

nobreemporio.com

split-acres.com

sharingservice-act.com

nakedinktees.shop

zhensheng1988.com

ipiton.com

liftoffdigitalmarketing.com

karen.cool

theprotestantchurch.com

shirhadarr.com

azdtwp.com

comzestdent.com

jnsjh.com

in-heat-cool.com

dfefej.top

tumingchun.com

eisei-shouji.tokyo

sparecreeping.com

Signatures

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

Formbook payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/5116-145-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/5116-151-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2092-153-0x0000000000EE0000-0x0000000000F0F000-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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation tmp.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	tmp.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

tmp.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\gedata = "\"C:\\Users\\Admin\\AppData\\Roaming\\gedata.exe\""	tmp.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

tmp.exetmp.exemsiexec.exe

description	pid	process	target process
PID 3344 set thread context of 5116	3344	tmp.exe	tmp.exe
PID 5116 set thread context of 2640	5116	tmp.exe	Explorer.EXE
PID 2092 set thread context of 2640	2092	msiexec.exe	Explorer.EXE

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 36 IoCs

Processes:

powershell.exetmp.exemsiexec.exe

pid	process
384	powershell.exe
384	powershell.exe
5116	tmp.exe
5116	tmp.exe
5116	tmp.exe
5116	tmp.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe
2092	msiexec.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2640 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

tmp.exemsiexec.exe

pid process

5116 tmp.exe
5116 tmp.exe
5116 tmp.exe
2092 msiexec.exe
2092 msiexec.exe

pid	process
2640	Explorer.EXE

pid	process
5116	tmp.exe
5116	tmp.exe
5116	tmp.exe
2092	msiexec.exe
2092	msiexec.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

tmp.exepowershell.exetmp.exemsiexec.exe

description	pid	process
Token: SeDebugPrivilege	3344	tmp.exe
Token: SeDebugPrivilege	384	powershell.exe
Token: SeDebugPrivilege	5116	tmp.exe
Token: SeDebugPrivilege	2092	msiexec.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

tmp.exeExplorer.EXEmsiexec.exe

description	pid	process	target process
PID 3344 wrote to memory of 384	3344	tmp.exe	powershell.exe
PID 3344 wrote to memory of 384	3344	tmp.exe	powershell.exe
PID 3344 wrote to memory of 384	3344	tmp.exe	powershell.exe
PID 3344 wrote to memory of 5116	3344	tmp.exe	tmp.exe
PID 3344 wrote to memory of 5116	3344	tmp.exe	tmp.exe
PID 3344 wrote to memory of 5116	3344	tmp.exe	tmp.exe
PID 3344 wrote to memory of 5116	3344	tmp.exe	tmp.exe
PID 3344 wrote to memory of 5116	3344	tmp.exe	tmp.exe
PID 3344 wrote to memory of 5116	3344	tmp.exe	tmp.exe
PID 2640 wrote to memory of 2092	2640	Explorer.EXE	msiexec.exe
PID 2640 wrote to memory of 2092	2640	Explorer.EXE	msiexec.exe
PID 2640 wrote to memory of 2092	2640	Explorer.EXE	msiexec.exe
PID 2092 wrote to memory of 4328	2092	msiexec.exe	cmd.exe
PID 2092 wrote to memory of 4328	2092	msiexec.exe	cmd.exe
PID 2092 wrote to memory of 4328	2092	msiexec.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2640

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3344

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:384

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:5116

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1988

C:\Windows\SysWOW64\msiexec.exe
"C:\Windows\SysWOW64\msiexec.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2092

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
3⤵
PID:4328

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/384-142-0x0000000008000000-0x000000000867A000-memory.dmp

Filesize
6.5MB

Download
memory/384-143-0x0000000006C80000-0x0000000006C9A000-memory.dmp

Filesize
104KB

Download
memory/384-136-0x0000000000000000-mapping.dmp

Download
memory/384-137-0x00000000051D0000-0x0000000005206000-memory.dmp

Filesize
216KB

Download
memory/384-138-0x0000000005840000-0x0000000005E68000-memory.dmp

Filesize
6.2MB

Download
memory/384-139-0x0000000006090000-0x00000000060F6000-memory.dmp

Filesize
408KB

Download
memory/384-141-0x0000000006790000-0x00000000067AE000-memory.dmp

Filesize
120KB

Download
memory/384-140-0x0000000006100000-0x0000000006166000-memory.dmp

Filesize
408KB

Download
memory/2092-157-0x0000000002E50000-0x0000000002EE3000-memory.dmp

Filesize
588KB

Download
memory/2092-153-0x0000000000EE0000-0x0000000000F0F000-memory.dmp

Filesize
188KB

Download
memory/2092-152-0x0000000000AD0000-0x0000000000AE2000-memory.dmp

Filesize
72KB

Download
memory/2092-154-0x0000000002F00000-0x000000000324A000-memory.dmp

Filesize
3.3MB

Download
memory/2092-150-0x0000000000000000-mapping.dmp

Download
memory/2640-149-0x0000000002BF0000-0x0000000002D58000-memory.dmp

Filesize
1.4MB

Download
memory/2640-158-0x0000000007F90000-0x0000000008093000-memory.dmp

Filesize
1.0MB

Download
memory/2640-159-0x0000000007F90000-0x0000000008093000-memory.dmp

Filesize
1.0MB

Download
memory/2640-155-0x0000000002BF0000-0x0000000002D58000-memory.dmp

Filesize
1.4MB

Download
memory/3344-133-0x00000000055E0000-0x0000000005672000-memory.dmp

Filesize
584KB

Download
memory/3344-134-0x0000000005C30000-0x00000000061D4000-memory.dmp

Filesize
5.6MB

Download
memory/3344-132-0x00000000007E0000-0x00000000009FA000-memory.dmp

Filesize
2.1MB

Download
memory/3344-135-0x00000000056B0000-0x00000000056D2000-memory.dmp

Filesize
136KB

Download
memory/4328-156-0x0000000000000000-mapping.dmp

Download
memory/5116-144-0x0000000000000000-mapping.dmp

Download
memory/5116-151-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/5116-148-0x0000000001340000-0x0000000001354000-memory.dmp

Filesize
80KB

Download
memory/5116-147-0x00000000018B0000-0x0000000001BFA000-memory.dmp

Filesize
3.3MB

Download
memory/5116-145-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads