formbook | ac9668e3d4b15124dca0754cbcb471f3fe21ec7c86bbe7b004e155cf175c6400

Analysis

max time kernel
148s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03/01/2025, 03:56

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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 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2908-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2908-9-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2896-15-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2132 set thread context of 2908	2132	aaaaaaaaaaaaaaaaaa.exe	30
PID 2908 set thread context of 1196	2908	svchost.exe	21
PID 2896 set thread context of 1196	2896	systray.exe	21

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	systray.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aaaaaaaaaaaaaaaaaa.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2908	svchost.exe
2908	svchost.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe
2896	systray.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2132	aaaaaaaaaaaaaaaaaa.exe
2908	svchost.exe
2908	svchost.exe
2908	svchost.exe
2896	systray.exe
2896	systray.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2908	svchost.exe
Token: SeDebugPrivilege	2896	systray.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2132	aaaaaaaaaaaaaaaaaa.exe
2132	aaaaaaaaaaaaaaaaaa.exe
1196	Explorer.EXE
1196	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2132	aaaaaaaaaaaaaaaaaa.exe
2132	aaaaaaaaaaaaaaaaaa.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2132 wrote to memory of 2908	2132	aaaaaaaaaaaaaaaaaa.exe	30
PID 2132 wrote to memory of 2908	2132	aaaaaaaaaaaaaaaaaa.exe	30
PID 2132 wrote to memory of 2908	2132	aaaaaaaaaaaaaaaaaa.exe	30
PID 2132 wrote to memory of 2908	2132	aaaaaaaaaaaaaaaaaa.exe	30
PID 2132 wrote to memory of 2908	2132	aaaaaaaaaaaaaaaaaa.exe	30
PID 1196 wrote to memory of 2896	1196	Explorer.EXE	49
PID 1196 wrote to memory of 2896	1196	Explorer.EXE	49
PID 1196 wrote to memory of 2896	1196	Explorer.EXE	49
PID 1196 wrote to memory of 2896	1196	Explorer.EXE	49
PID 2896 wrote to memory of 2224	2896	systray.exe	50
PID 2896 wrote to memory of 2224	2896	systray.exe	50
PID 2896 wrote to memory of 2224	2896	systray.exe	50
PID 2896 wrote to memory of 2224	2896	systray.exe	50

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1196
- 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:2132
- - 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:2908
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2396
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2404
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2344
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1252
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:876
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2232
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2528
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1112
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2676
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2260
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2432
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2184
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:1948
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2712
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2740
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2880
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2844
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2876
- C:\Windows\SysWOW64\systray.exe
  "C:\Windows\SysWOW64\systray.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2896
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1196-25-0x0000000002EA0000-0x0000000002F5C000-memory.dmp

Filesize
752KB

Download
memory/1196-23-0x0000000002EA0000-0x0000000002F5C000-memory.dmp

Filesize
752KB

Download
memory/1196-22-0x0000000002EA0000-0x0000000002F5C000-memory.dmp

Filesize
752KB

Download
memory/1196-16-0x0000000007600000-0x00000000077A8000-memory.dmp

Filesize
1.7MB

Download
memory/1196-11-0x0000000007600000-0x00000000077A8000-memory.dmp

Filesize
1.7MB

Download
memory/2132-5-0x0000000000240000-0x0000000000244000-memory.dmp

Filesize
16KB

Download
memory/2896-12-0x0000000000960000-0x0000000000965000-memory.dmp

Filesize
20KB

Download
memory/2896-14-0x0000000000960000-0x0000000000965000-memory.dmp

Filesize
20KB

Download
memory/2896-15-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2908-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2908-10-0x0000000000140000-0x0000000000154000-memory.dmp

Filesize
80KB

Download
memory/2908-7-0x00000000009B0000-0x0000000000CB3000-memory.dmp

Filesize
3.0MB

Download
memory/2908-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download