formbook | f102a9c9ef0ebbe9dbdde39b99beef77e6653cb2c1179def09981c506b23f20b

General

Target

scrss.exe
Size

2.1MB
MD5

13a0b0388851bb224b5a71b9ad3bad48
SHA1

297372dc285474cf8f587c0673ff5638c982e4f0
SHA256

b062a9d743bcc3af9728b50385318d53924a65ad2defffae0ff625b6300280d1
SHA512

c235917d46d9c5c7ea4af374966eb98151ec753711f620af3295b3ec9ccf835f2946deede7fd5c7a68d2b2b13829f21fb2646aca1be399a7de1c78416aee8290
SSDEEP

24576:GM5ixeMI2troHK6vQssZJ/BeVIdB4Eg54uZG9q8QKXxOLXxDTUHVM38Q:B5yeMISavQs8peV6JQuM/zxaVM/

Score

10^/10

formbook s0s2 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

s0s2

Decoy

stripe-forecast.com

perfectingnextstage.com

primarole.com

nonnydesigns.com

wordsofweightandlevity.com

mafleursam.com

hardwarepicker.tech

minex-intl.com

thenextbigtech.net

rabeproject.com

sticktogracestudio.com

releve.space

readoku.net

carings.net

nasdaq-ex.store

au-techng.com

thethoughtgenius.com

how-to-learn-languages.net

kitabisabelanja.com

awndka.xyz

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/2752-12-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2752-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1940-22-0x0000000000090000-0x00000000000BF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2268	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2344 set thread context of 2752	2344	scrss.exe	30
PID 2752 set thread context of 1204	2752	scrss.exe	21
PID 1940 set thread context of 1204	1940	cmstp.exe	21

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	scrss.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmstp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
2344	scrss.exe
2344	scrss.exe
2344	scrss.exe
2344	scrss.exe
2344	scrss.exe
2344	scrss.exe
2344	scrss.exe
2344	scrss.exe
2344	scrss.exe
2344	scrss.exe
2752	scrss.exe
2752	scrss.exe
1940	cmstp.exe
1940	cmstp.exe
1940	cmstp.exe
1940	cmstp.exe
1940	cmstp.exe
1940	cmstp.exe
1940	cmstp.exe
1940	cmstp.exe
1940	cmstp.exe
1940	cmstp.exe
1940	cmstp.exe
1940	cmstp.exe
1940	cmstp.exe
1940	cmstp.exe
1940	cmstp.exe
1940	cmstp.exe
1940	cmstp.exe
1940	cmstp.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2752	scrss.exe
2752	scrss.exe
2752	scrss.exe
1940	cmstp.exe
1940	cmstp.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2344	scrss.exe
Token: SeDebugPrivilege	2752	scrss.exe
Token: SeDebugPrivilege	1940	cmstp.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 2752	2344	scrss.exe	30
PID 2344 wrote to memory of 2752	2344	scrss.exe	30
PID 2344 wrote to memory of 2752	2344	scrss.exe	30
PID 2344 wrote to memory of 2752	2344	scrss.exe	30
PID 2344 wrote to memory of 2752	2344	scrss.exe	30
PID 2344 wrote to memory of 2752	2344	scrss.exe	30
PID 2344 wrote to memory of 2752	2344	scrss.exe	30
PID 1204 wrote to memory of 1940	1204	Explorer.EXE	32
PID 1204 wrote to memory of 1940	1204	Explorer.EXE	32
PID 1204 wrote to memory of 1940	1204	Explorer.EXE	32
PID 1204 wrote to memory of 1940	1204	Explorer.EXE	32
PID 1204 wrote to memory of 1940	1204	Explorer.EXE	32
PID 1204 wrote to memory of 1940	1204	Explorer.EXE	32
PID 1204 wrote to memory of 1940	1204	Explorer.EXE	32
PID 1940 wrote to memory of 2268	1940	cmstp.exe	33
PID 1940 wrote to memory of 2268	1940	cmstp.exe	33
PID 1940 wrote to memory of 2268	1940	cmstp.exe	33
PID 1940 wrote to memory of 2268	1940	cmstp.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Users\Admin\AppData\Local\Temp\scrss.exe
  "C:\Users\Admin\AppData\Local\Temp\scrss.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2344
- - C:\Users\Admin\AppData\Local\Temp\scrss.exe
    "C:\Users\Admin\AppData\Local\Temp\scrss.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2752
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:956
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.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:1940
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\scrss.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2268

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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/1204-25-0x0000000002C60000-0x0000000002D60000-memory.dmp

Filesize
1024KB

Download
memory/1204-19-0x0000000004930000-0x00000000049F3000-memory.dmp

Filesize
780KB

Download
memory/1204-23-0x0000000004930000-0x00000000049F3000-memory.dmp

Filesize
780KB

Download
memory/1940-21-0x0000000000B80000-0x0000000000B98000-memory.dmp

Filesize
96KB

Download
memory/1940-20-0x0000000000B80000-0x0000000000B98000-memory.dmp

Filesize
96KB

Download
memory/1940-22-0x0000000000090000-0x00000000000BF000-memory.dmp

Filesize
188KB

Download
memory/2344-3-0x00000000004F0000-0x0000000000506000-memory.dmp

Filesize
88KB

Download
memory/2344-7-0x0000000000AF0000-0x0000000000B24000-memory.dmp

Filesize
208KB

Download
memory/2344-6-0x0000000005650000-0x00000000056BC000-memory.dmp

Filesize
432KB

Download
memory/2344-5-0x0000000074370000-0x0000000074A5E000-memory.dmp

Filesize
6.9MB

Download
memory/2344-0-0x000000007437E000-0x000000007437F000-memory.dmp

Filesize
4KB

Download
memory/2344-4-0x000000007437E000-0x000000007437F000-memory.dmp

Filesize
4KB

Download
memory/2344-13-0x0000000074370000-0x0000000074A5E000-memory.dmp

Filesize
6.9MB

Download
memory/2344-2-0x0000000074370000-0x0000000074A5E000-memory.dmp

Filesize
6.9MB

Download
memory/2344-1-0x0000000000D50000-0x0000000000F6E000-memory.dmp

Filesize
2.1MB

Download
memory/2752-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2752-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2752-17-0x0000000000170000-0x0000000000184000-memory.dmp

Filesize
80KB

Download
memory/2752-14-0x0000000000980000-0x0000000000C83000-memory.dmp

Filesize
3.0MB

Download
memory/2752-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2752-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2752-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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