formbook | 17dc6ae2b8a4a5e958a09b19a771e102ec2ebbad438da6123705344eedcadf68

General

Target

aaaaaaaaaaaaaaaaaa.exe
Size

848KB
MD5

d4dea766d9cd1fdb9545c08969811132
SHA1

c02a941d7ab478095ce042262d5cac4be864f9ed
SHA256

17dc6ae2b8a4a5e958a09b19a771e102ec2ebbad438da6123705344eedcadf68
SHA512

708c12cf2110e604fedbfb7c5584edadcfd9ff29a161cd48dff0232921cdccf099c9eab8d59c66f45865d59c1759f6adb187747d4b743cb33bde4dcbf5e39ac6
SSDEEP

12288:rLkcoxg7v3qnC11ErwIhh0F4qwUgUny5QLEZFoyB1wCdQzdMgqLjSWx:ffmMv6Ckr7Mny5QLqBUCdvXx

Score

10^/10

formbook cl21 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

cl21

Decoy

0001.shop

earch-parttimejobs.today

are888.top

akanhaunthipped.shop

othing-heyu.xyz

cadvirsor.net

nclanalae.shop

lectric-cars-mexico.today

oxj-question.xyz

ersonalloanoffers.today

ersonalloans-fo54-fo37.click

verybody-ewfx.xyz

ercuremontauban.media

azilimdunyam.net

airs-clinicato.today

wiftsscend.click

ertainly-jbws.xyz

8xeng.app

damekadmitageable.cfd

ollapsedec.shop

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/704-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/704-10-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2196 set thread context of 704	2196	aaaaaaaaaaaaaaaaaa.exe	31
PID 704 set thread context of 1132	704	svchost.exe	20

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2736	2492	WerFault.exe	32

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aaaaaaaaaaaaaaaaaa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
704	svchost.exe
704	svchost.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
2196	aaaaaaaaaaaaaaaaaa.exe
704	svchost.exe
704	svchost.exe
704	svchost.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	704	svchost.exe
Token: SeShutdownPrivilege	1132	Explorer.EXE
Token: SeShutdownPrivilege	1132	Explorer.EXE
Token: SeShutdownPrivilege	1132	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2196	aaaaaaaaaaaaaaaaaa.exe
2196	aaaaaaaaaaaaaaaaaa.exe
1132	Explorer.EXE
1132	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2196	aaaaaaaaaaaaaaaaaa.exe
2196	aaaaaaaaaaaaaaaaaa.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2196 wrote to memory of 704	2196	aaaaaaaaaaaaaaaaaa.exe	31
PID 2196 wrote to memory of 704	2196	aaaaaaaaaaaaaaaaaa.exe	31
PID 2196 wrote to memory of 704	2196	aaaaaaaaaaaaaaaaaa.exe	31
PID 2196 wrote to memory of 704	2196	aaaaaaaaaaaaaaaaaa.exe	31
PID 2196 wrote to memory of 704	2196	aaaaaaaaaaaaaaaaaa.exe	31
PID 1132 wrote to memory of 2492	1132	Explorer.EXE	32
PID 1132 wrote to memory of 2492	1132	Explorer.EXE	32
PID 1132 wrote to memory of 2492	1132	Explorer.EXE	32
PID 1132 wrote to memory of 2492	1132	Explorer.EXE	32
PID 1132 wrote to memory of 2492	1132	Explorer.EXE	32
PID 1132 wrote to memory of 2492	1132	Explorer.EXE	32
PID 1132 wrote to memory of 2492	1132	Explorer.EXE	32
PID 2492 wrote to memory of 2736	2492	msiexec.exe	33
PID 2492 wrote to memory of 2736	2492	msiexec.exe	33
PID 2492 wrote to memory of 2736	2492	msiexec.exe	33
PID 2492 wrote to memory of 2736	2492	msiexec.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1132
- C:\Users\Admin\AppData\Local\Temp\aaaaaaaaaaaaaaaaaa.exe
  "C:\Users\Admin\AppData\Local\Temp\aaaaaaaaaaaaaaaaaa.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2196
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\aaaaaaaaaaaaaaaaaa.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:704
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\SysWOW64\msiexec.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2492
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2492 -s 268
    3⤵
    - Program crash
    PID:2736

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/704-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/704-7-0x0000000000BD0000-0x0000000000ED3000-memory.dmp

Filesize
3.0MB

Download
memory/704-11-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/704-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1132-9-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/1132-12-0x0000000004860000-0x000000000493E000-memory.dmp

Filesize
888KB

Download
memory/1132-19-0x0000000004860000-0x000000000493E000-memory.dmp

Filesize
888KB

Download
memory/2196-5-0x0000000000E50000-0x0000000000E54000-memory.dmp

Filesize
16KB

Download
memory/2492-14-0x0000000000B60000-0x0000000000B74000-memory.dmp

Filesize
80KB

Download
memory/2492-13-0x0000000000B60000-0x0000000000B74000-memory.dmp

Filesize
80KB

Download
memory/2492-16-0x0000000000B60000-0x0000000000B74000-memory.dmp

Filesize
80KB

Download

Analysis

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