formbook | 502751e0b4a8acff074def25e8bf46495cc258100652ae11194aea84b5278fcf

Analysis

max time kernel
150s
max time network
189s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
29-11-2022 09:10

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General

Target

formbook4.exe
Size

1.0MB
MD5

e434c99075bb1cc365706ac25bc1c53a
SHA1

4cbc665703ef6c5eb46608aa5b8fef42c6afe6f5
SHA256

f50fd444e689593c2b29b62961986f31fe2b61f28850d23680aab7671add1365
SHA512

a6de56271d64f1ec3c4049faaeb99b7822f22b0acb6716a5ac52f7726d6278724d3110361cf13b63d441af01c3668dcde727a3ba322af17e00b33b0b0abb4610
SSDEEP

24576:bpxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxNuss8gPkS3k:23cj+/ZEFdj

Score

10^/10

formbook 5pdf rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

5pdf

Decoy

cnoOEQHsI9ejYIEif1HquIlIogYo8Ow=

+pAzTzDtpZpp

djD/KBrcDAYQyOGt+Us+fA==

EJM2X0tTvNKodx36

86lMWj8hSQvtqtamtDE6kbKCy3c=

/ywYVB9fxjhRAg==

0OZ0eaYoArZ0

Kl0MifS5n1TXmIQBZLE=

2eN+GpZbBAJDAg==

E8OdZbo7E5cuJgSu2JNUfg==

wXQeNSUaXiXts3xLPw==

PzLRe+HePPeJJB8PJw==

BPaaT7LANzqtcROc+Us+fA==

/vB5AHAzcWtvN1TtGCkZ2L47OjGmU8RrWQ==

gwSl0rcfM/O7hCE=

NrtIzTsH96xB8a3HBhbfMkCs

bxu1vLuDaipA5w0OVuBc8Mw=

2IRJAE05bSVR4Oj7UeBc8Mw=

kQuq4sSpB/7gs3xLPw==

iqhd2Ea725sBlSE=

Signatures

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

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

formbook4.exeformbook4.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	formbook4.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	formbook4.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

formbook4.exeformbook4.exesvchost.exe

description	pid	process	target process
PID 2012 set thread context of 4216	2012	formbook4.exe	formbook4.exe
PID 4216 set thread context of 3076	4216	formbook4.exe	Explorer.EXE
PID 100 set thread context of 3076	100	svchost.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
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
T1053

Processes:

schtasks.exe

pid process

3980 schtasks.exe

pid	process
3980	schtasks.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	svchost.exe

Suspicious behavior: EnumeratesProcesses 40 IoCs

Processes:

formbook4.exeformbook4.exepowershell.exesvchost.exe

pid	process
2012	formbook4.exe
2012	formbook4.exe
4216	formbook4.exe
4216	formbook4.exe
1132	powershell.exe
4216	formbook4.exe
4216	formbook4.exe
4216	formbook4.exe
4216	formbook4.exe
4216	formbook4.exe
4216	formbook4.exe
1132	powershell.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3076 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

formbook4.exesvchost.exe

pid process

4216 formbook4.exe
4216 formbook4.exe
4216 formbook4.exe
100 svchost.exe
100 svchost.exe
100 svchost.exe
100 svchost.exe

pid	process
3076	Explorer.EXE

pid	process
4216	formbook4.exe
4216	formbook4.exe
4216	formbook4.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe
100	svchost.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

formbook4.exepowershell.exeformbook4.exesvchost.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	2012	formbook4.exe
Token: SeDebugPrivilege	1132	powershell.exe
Token: SeDebugPrivilege	4216	formbook4.exe
Token: SeDebugPrivilege	100	svchost.exe
Token: SeShutdownPrivilege	3076	Explorer.EXE
Token: SeCreatePagefilePrivilege	3076	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

formbook4.exeExplorer.EXEsvchost.exe

description	pid	process	target process
PID 2012 wrote to memory of 1132	2012	formbook4.exe	powershell.exe
PID 2012 wrote to memory of 1132	2012	formbook4.exe	powershell.exe
PID 2012 wrote to memory of 1132	2012	formbook4.exe	powershell.exe
PID 2012 wrote to memory of 3980	2012	formbook4.exe	schtasks.exe
PID 2012 wrote to memory of 3980	2012	formbook4.exe	schtasks.exe
PID 2012 wrote to memory of 3980	2012	formbook4.exe	schtasks.exe
PID 2012 wrote to memory of 4216	2012	formbook4.exe	formbook4.exe
PID 2012 wrote to memory of 4216	2012	formbook4.exe	formbook4.exe
PID 2012 wrote to memory of 4216	2012	formbook4.exe	formbook4.exe
PID 2012 wrote to memory of 4216	2012	formbook4.exe	formbook4.exe
PID 2012 wrote to memory of 4216	2012	formbook4.exe	formbook4.exe
PID 2012 wrote to memory of 4216	2012	formbook4.exe	formbook4.exe
PID 3076 wrote to memory of 100	3076	Explorer.EXE	svchost.exe
PID 3076 wrote to memory of 100	3076	Explorer.EXE	svchost.exe
PID 3076 wrote to memory of 100	3076	Explorer.EXE	svchost.exe
PID 100 wrote to memory of 1800	100	svchost.exe	Firefox.exe
PID 100 wrote to memory of 1800	100	svchost.exe	Firefox.exe
PID 100 wrote to memory of 1800	100	svchost.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3076
- C:\Users\Admin\AppData\Local\Temp\formbook4.exe
  "C:\Users\Admin\AppData\Local\Temp\formbook4.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2012
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\vwzBruALhhNkob.exe"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1132
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vwzBruALhhNkob" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBCE7.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:3980
- - C:\Users\Admin\AppData\Local\Temp\formbook4.exe
    "C:\Users\Admin\AppData\Local\Temp\formbook4.exe"
    3⤵
    - Checks computer location settings
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4216
- C:\Windows\SysWOW64\svchost.exe
  "C:\Windows\SysWOW64\svchost.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:100
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1800

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

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\tmpBCE7.tmp

Filesize
1KB

MD5
adbb70656e439197fb121fe06d4e2926

SHA1
20e379690c8f54da414afa7771a78a82ac3bee19

SHA256
46df2be6dbcc4326feb2380c7ecdc31b32f0ee7c96e039bada8b37c1dfccc5fc

SHA512
110d8e2b32624ec362a7f0e1e3964afcc5d3df2b78373ff71776d0e129eeb50f078269813212725eb8b8a0c08cb141b1a7340f3bb58dbd57d9e72a69a985dd96

Download Submit
memory/100-163-0x0000000001200000-0x000000000154A000-memory.dmp

Filesize
3.3MB

Download
memory/100-162-0x0000000000590000-0x00000000005BD000-memory.dmp

Filesize
180KB

Download
memory/100-161-0x0000000000180000-0x000000000018E000-memory.dmp

Filesize
56KB

Download
memory/100-158-0x0000000000000000-mapping.dmp

Download
memory/100-169-0x00000000015E0000-0x000000000166F000-memory.dmp

Filesize
572KB

Download
memory/100-171-0x0000000000590000-0x00000000005BD000-memory.dmp

Filesize
180KB

Download
memory/1132-157-0x0000000006320000-0x000000000633E000-memory.dmp

Filesize
120KB

Download
memory/1132-167-0x0000000007350000-0x000000000736A000-memory.dmp

Filesize
104KB

Download
memory/1132-165-0x0000000007290000-0x0000000007326000-memory.dmp

Filesize
600KB

Download
memory/1132-164-0x0000000007080000-0x000000000708A000-memory.dmp

Filesize
40KB

Download
memory/1132-160-0x0000000007000000-0x000000000701A000-memory.dmp

Filesize
104KB

Download
memory/1132-145-0x0000000004F20000-0x0000000005548000-memory.dmp

Filesize
6.2MB

Download
memory/1132-138-0x0000000000000000-mapping.dmp

Download
memory/1132-147-0x0000000005580000-0x00000000055A2000-memory.dmp

Filesize
136KB

Download
memory/1132-148-0x0000000005620000-0x0000000005686000-memory.dmp

Filesize
408KB

Download
memory/1132-159-0x0000000007650000-0x0000000007CCA000-memory.dmp

Filesize
6.5MB

Download
memory/1132-166-0x0000000007240000-0x000000000724E000-memory.dmp

Filesize
56KB

Download
memory/1132-168-0x0000000007330000-0x0000000007338000-memory.dmp

Filesize
32KB

Download
memory/1132-156-0x0000000070D10000-0x0000000070D5C000-memory.dmp

Filesize
304KB

Download
memory/1132-140-0x0000000004720000-0x0000000004756000-memory.dmp

Filesize
216KB

Download
memory/1132-154-0x0000000005CF0000-0x0000000005D0E000-memory.dmp

Filesize
120KB

Download
memory/1132-155-0x00000000062B0000-0x00000000062E2000-memory.dmp

Filesize
200KB

Download
memory/2012-137-0x000000000C740000-0x000000000C7A6000-memory.dmp

Filesize
408KB

Download
memory/2012-136-0x000000000C400000-0x000000000C49C000-memory.dmp

Filesize
624KB

Download
memory/2012-135-0x0000000005560000-0x000000000556A000-memory.dmp

Filesize
40KB

Download
memory/2012-134-0x00000000055E0000-0x0000000005672000-memory.dmp

Filesize
584KB

Download
memory/2012-133-0x0000000005AF0000-0x0000000006094000-memory.dmp

Filesize
5.6MB

Download
memory/2012-132-0x0000000000AB0000-0x0000000000BBC000-memory.dmp

Filesize
1.0MB

Download
memory/3076-153-0x00000000082B0000-0x00000000083D6000-memory.dmp

Filesize
1.1MB

Download
memory/3076-170-0x00000000032D0000-0x00000000033C2000-memory.dmp

Filesize
968KB

Download
memory/3076-172-0x00000000032D0000-0x00000000033C2000-memory.dmp

Filesize
968KB

Download
memory/3980-139-0x0000000000000000-mapping.dmp

Download
memory/4216-142-0x0000000000000000-mapping.dmp

Download
memory/4216-152-0x0000000000B80000-0x0000000000B90000-memory.dmp

Filesize
64KB

Download
memory/4216-151-0x00000000010D0000-0x000000000141A000-memory.dmp

Filesize
3.3MB

Download
memory/4216-150-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/4216-149-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4216-146-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4216-143-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download