formbook | 6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab

General

Target

6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab.exe
Size

847KB
MD5

93406d8e4abf5ff12a201760a40fd8ca
SHA1

d0015e7c1f43f5b34525374ce8fcee85d0238a64
SHA256

6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab
SHA512

0f69be070a617388504df340889d68c3e32c25b0fc18935c72e1b03b8cf0c4fdcaa2582fa358b3a60b006fdbb2a708c5ae2ab9a9094b689d96f29e79767514ad
SSDEEP

12288:rLkcoxg7v3qnC11ErwIhh0F4qwUgUny5QLIcd+uVY/ZGumADWn0SxG:ffmMv6Ckr7Mny5QLIiYBjZDWn0S0

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/2436-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2436-9-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1916-14-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2296 set thread context of 2436	2296	6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab.exe	30
PID 2436 set thread context of 1396	2436	svchost.exe	21
PID 1916 set thread context of 1396	1916	chkdsk.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	6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2436	svchost.exe
2436	svchost.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe
1916	chkdsk.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2296	6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab.exe
2436	svchost.exe
2436	svchost.exe
2436	svchost.exe
1916	chkdsk.exe
1916	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2436	svchost.exe
Token: SeDebugPrivilege	1916	chkdsk.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2296	6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab.exe
2296	6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab.exe
1396	Explorer.EXE
1396	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2296	6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab.exe
2296	6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 2436	2296	6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab.exe	30
PID 2296 wrote to memory of 2436	2296	6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab.exe	30
PID 2296 wrote to memory of 2436	2296	6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab.exe	30
PID 2296 wrote to memory of 2436	2296	6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab.exe	30
PID 2296 wrote to memory of 2436	2296	6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab.exe	30
PID 1396 wrote to memory of 1916	1396	Explorer.EXE	31
PID 1396 wrote to memory of 1916	1396	Explorer.EXE	31
PID 1396 wrote to memory of 1916	1396	Explorer.EXE	31
PID 1396 wrote to memory of 1916	1396	Explorer.EXE	31
PID 1916 wrote to memory of 2908	1916	chkdsk.exe	32
PID 1916 wrote to memory of 2908	1916	chkdsk.exe	32
PID 1916 wrote to memory of 2908	1916	chkdsk.exe	32
PID 1916 wrote to memory of 2908	1916	chkdsk.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1396
- C:\Users\Admin\AppData\Local\Temp\6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab.exe
  "C:\Users\Admin\AppData\Local\Temp\6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab.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:2296
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\6d74b352350e3e1d6c9154a6323ec8f5bffab4fb5c01b9f161fe96bc7bec03ab.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2436
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - 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:2908

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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/1396-11-0x0000000006BD0000-0x0000000006CF7000-memory.dmp

Filesize
1.2MB

Download
memory/1396-24-0x00000000077D0000-0x0000000007961000-memory.dmp

Filesize
1.6MB

Download
memory/1396-22-0x00000000077D0000-0x0000000007961000-memory.dmp

Filesize
1.6MB

Download
memory/1396-21-0x00000000077D0000-0x0000000007961000-memory.dmp

Filesize
1.6MB

Download
memory/1396-15-0x0000000006BD0000-0x0000000006CF7000-memory.dmp

Filesize
1.2MB

Download
memory/1916-12-0x00000000008E0000-0x00000000008E7000-memory.dmp

Filesize
28KB

Download
memory/1916-13-0x00000000008E0000-0x00000000008E7000-memory.dmp

Filesize
28KB

Download
memory/1916-14-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2296-5-0x0000000000250000-0x0000000000254000-memory.dmp

Filesize
16KB

Download
memory/2436-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2436-10-0x0000000000110000-0x0000000000124000-memory.dmp

Filesize
80KB

Download
memory/2436-7-0x0000000000800000-0x0000000000B03000-memory.dmp

Filesize
3.0MB

Download
memory/2436-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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