formbook | 18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbe

General

Target

18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe
Size

1.5MB
MD5

b940de1def8474541f887b550be00380
SHA1

8758f6edbf3c1f83b92300c9c8536f4989d53eeb
SHA256

18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbe
SHA512

259c6abcdaf385cdc6107bda2bb01a7b4fc9729650ed2b91365ea666cb09c91e8fe54397a2c53237db11f7d02b1893553dbf23c1cbebaa4c3c17267537d44004
SSDEEP

24576:JqDEvCTbMWu7rQYlBQcBiT6rprG8aT56HnRFAeI8rZNQVnjBRDI8k:JTvC/MTQYxsWR7aT5KFZNQVP

Score

10^/10

formbook k94g discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

k94g

Decoy

nstandgoz.xyz

dhd-treatment-37310.bond

13s-braces-us-ze.fun

umdona.shop

96ph803ql.bond

kka9max.net

corporate-10.xyz

edicalassistance869840.online

lobalresources-bh.xyz

3145978.xyz

ovdaawebsite.online

etting-thailand.net

icloud.xyz

poxk.shop

25ks-ls72510.cyou

women.info

iwyrfbfvhv9.asia

luratu.xyz

ffordable-power-charger.today

edanuryilmaz.xyz

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/4940-3-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4940-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1916-11-0x0000000000A70000-0x0000000000A9F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4044 set thread context of 4940	4044	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe	84
PID 4940 set thread context of 3464	4940	svchost.exe	56
PID 1916 set thread context of 3464	1916	cmstp.exe	56

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	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.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 50 IoCs

pid	Process
4940	svchost.exe
4940	svchost.exe
4940	svchost.exe
4940	svchost.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe
1916	cmstp.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
4044	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe
4940	svchost.exe
4940	svchost.exe
4940	svchost.exe
1916	cmstp.exe
1916	cmstp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4940	svchost.exe
Token: SeDebugPrivilege	1916	cmstp.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4044	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe
4044	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
4044	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe
4044	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4044 wrote to memory of 4940	4044	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe	84
PID 4044 wrote to memory of 4940	4044	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe	84
PID 4044 wrote to memory of 4940	4044	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe	84
PID 4044 wrote to memory of 4940	4044	18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe	84
PID 3464 wrote to memory of 1916	3464	Explorer.EXE	85
PID 3464 wrote to memory of 1916	3464	Explorer.EXE	85
PID 3464 wrote to memory of 1916	3464	Explorer.EXE	85
PID 1916 wrote to memory of 4252	1916	cmstp.exe	90
PID 1916 wrote to memory of 4252	1916	cmstp.exe	90
PID 1916 wrote to memory of 4252	1916	cmstp.exe	90

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3464
- C:\Users\Admin\AppData\Local\Temp\18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe
  "C:\Users\Admin\AppData\Local\Temp\18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.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:4044
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\18b8be474d7df6098362d403cd7b300ba947b149d745fc316bf90756a4877bbeN.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4940
- 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:1916
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4252

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

Loading Replay Monitor...

Downloads

memory/1916-9-0x00000000001E0000-0x00000000001F6000-memory.dmp

Filesize
88KB

Download
memory/1916-11-0x0000000000A70000-0x0000000000A9F000-memory.dmp

Filesize
188KB

Download
memory/1916-10-0x00000000001E0000-0x00000000001F6000-memory.dmp

Filesize
88KB

Download
memory/3464-12-0x0000000003210000-0x000000000332F000-memory.dmp

Filesize
1.1MB

Download
memory/3464-8-0x0000000003210000-0x000000000332F000-memory.dmp

Filesize
1.1MB

Download
memory/3464-16-0x00000000087E0000-0x000000000893E000-memory.dmp

Filesize
1.4MB

Download
memory/3464-17-0x00000000087E0000-0x000000000893E000-memory.dmp

Filesize
1.4MB

Download
memory/3464-19-0x00000000087E0000-0x000000000893E000-memory.dmp

Filesize
1.4MB

Download
memory/4044-2-0x0000000003820000-0x0000000003A20000-memory.dmp

Filesize
2.0MB

Download
memory/4940-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4940-7-0x0000000001890000-0x00000000018A4000-memory.dmp

Filesize
80KB

Download
memory/4940-4-0x0000000001400000-0x000000000174A000-memory.dmp

Filesize
3.3MB

Download
memory/4940-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing