formbook | a4fa23e8786de563fd0eef88e32ea883672dc02c823f119ee8ffc82c0c0b6f9e

General

Target

invoice 2024665-1112.exe
Size

848KB
MD5

01558475f7d940f2fd80c0f2e4819169
SHA1

56de61a2f8713d3f6711f85169bcf040f1cd6d5e
SHA256

a4fa23e8786de563fd0eef88e32ea883672dc02c823f119ee8ffc82c0c0b6f9e
SHA512

c6e26c54dfcd8eed8e864985c3b0cac8674667cf73b91377853744709ca7059e12268d2f8678b6b0b6579c71fe4a4ee6d3c006b9f60d7d65fbdcabdd0417ea34
SSDEEP

12288:rLkcoxg7v3qnC11ErwIhh0F4qwUgUny5QLf99s6x2ABR7/ATY0kHgnC87og:ffmMv6Ckr7Mny5QLcMB5Mh7og

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/3052-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/3052-9-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2096 set thread context of 3052	2096	invoice 2024665-1112.exe	30
PID 3052 set thread context of 1244	3052	svchost.exe	21

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
2344	2040	WerFault.exe	31

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	invoice 2024665-1112.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3052	svchost.exe
3052	svchost.exe

Suspicious behavior: MapViewOfSection 4 IoCs

pid	Process
2096	invoice 2024665-1112.exe
3052	svchost.exe
3052	svchost.exe
3052	svchost.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3052	svchost.exe
Token: SeShutdownPrivilege	1244	Explorer.EXE
Token: SeShutdownPrivilege	1244	Explorer.EXE
Token: SeShutdownPrivilege	1244	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2096	invoice 2024665-1112.exe
2096	invoice 2024665-1112.exe
1244	Explorer.EXE
1244	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2096	invoice 2024665-1112.exe
2096	invoice 2024665-1112.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2096 wrote to memory of 3052	2096	invoice 2024665-1112.exe	30
PID 2096 wrote to memory of 3052	2096	invoice 2024665-1112.exe	30
PID 2096 wrote to memory of 3052	2096	invoice 2024665-1112.exe	30
PID 2096 wrote to memory of 3052	2096	invoice 2024665-1112.exe	30
PID 2096 wrote to memory of 3052	2096	invoice 2024665-1112.exe	30
PID 1244 wrote to memory of 2040	1244	Explorer.EXE	31
PID 1244 wrote to memory of 2040	1244	Explorer.EXE	31
PID 1244 wrote to memory of 2040	1244	Explorer.EXE	31
PID 1244 wrote to memory of 2040	1244	Explorer.EXE	31
PID 1244 wrote to memory of 2040	1244	Explorer.EXE	31
PID 1244 wrote to memory of 2040	1244	Explorer.EXE	31
PID 1244 wrote to memory of 2040	1244	Explorer.EXE	31
PID 2040 wrote to memory of 2344	2040	msiexec.exe	32
PID 2040 wrote to memory of 2344	2040	msiexec.exe	32
PID 2040 wrote to memory of 2344	2040	msiexec.exe	32
PID 2040 wrote to memory of 2344	2040	msiexec.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1244
- C:\Users\Admin\AppData\Local\Temp\invoice 2024665-1112.exe
  "C:\Users\Admin\AppData\Local\Temp\invoice 2024665-1112.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:2096
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\invoice 2024665-1112.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3052
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\SysWOW64\msiexec.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2040
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 268
    3⤵
    - Program crash
    PID:2344

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/1244-11-0x00000000051C0000-0x0000000005298000-memory.dmp

Filesize
864KB

Download
memory/1244-18-0x00000000051C0000-0x0000000005298000-memory.dmp

Filesize
864KB

Download
memory/2040-13-0x0000000000B20000-0x0000000000B34000-memory.dmp

Filesize
80KB

Download
memory/2040-12-0x0000000000B20000-0x0000000000B34000-memory.dmp

Filesize
80KB

Download
memory/2040-15-0x0000000000B20000-0x0000000000B34000-memory.dmp

Filesize
80KB

Download
memory/2096-5-0x0000000000260000-0x0000000000264000-memory.dmp

Filesize
16KB

Download
memory/3052-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3052-7-0x0000000000770000-0x0000000000A73000-memory.dmp

Filesize
3.0MB

Download
memory/3052-10-0x0000000000340000-0x0000000000354000-memory.dmp

Filesize
80KB

Download
memory/3052-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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