formbook | 577438041a38554d209b838173679d5d815639368aaceb835b18423081f26ca0

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/2556-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2560-12-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2372 set thread context of 2556	2372	invoice 2024665-1112.exe	30
PID 2556 set thread context of 1248	2556	svchost.exe	21
PID 2560 set thread context of 1248	2560	NAPSTAT.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	invoice 2024665-1112.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NAPSTAT.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2556	svchost.exe
2556	svchost.exe
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2372	invoice 2024665-1112.exe
2556	svchost.exe
2556	svchost.exe
2556	svchost.exe
2560	NAPSTAT.EXE
2560	NAPSTAT.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2556	svchost.exe
Token: SeDebugPrivilege	2560	NAPSTAT.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
2372	invoice 2024665-1112.exe
2372	invoice 2024665-1112.exe
1248	Explorer.EXE
1248	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2372	invoice 2024665-1112.exe
2372	invoice 2024665-1112.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 2556	2372	invoice 2024665-1112.exe	30
PID 2372 wrote to memory of 2556	2372	invoice 2024665-1112.exe	30
PID 2372 wrote to memory of 2556	2372	invoice 2024665-1112.exe	30
PID 2372 wrote to memory of 2556	2372	invoice 2024665-1112.exe	30
PID 2372 wrote to memory of 2556	2372	invoice 2024665-1112.exe	30
PID 1248 wrote to memory of 2560	1248	Explorer.EXE	31
PID 1248 wrote to memory of 2560	1248	Explorer.EXE	31
PID 1248 wrote to memory of 2560	1248	Explorer.EXE	31
PID 1248 wrote to memory of 2560	1248	Explorer.EXE	31
PID 2560 wrote to memory of 2128	2560	NAPSTAT.EXE	33
PID 2560 wrote to memory of 2128	2560	NAPSTAT.EXE	33
PID 2560 wrote to memory of 2128	2560	NAPSTAT.EXE	33
PID 2560 wrote to memory of 2128	2560	NAPSTAT.EXE	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1248
- 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:2372
- - 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:2556
- C:\Windows\SysWOW64\NAPSTAT.EXE
  "C:\Windows\SysWOW64\NAPSTAT.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:2560
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2128

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

Loading Replay Monitor...

Downloads

memory/1248-9-0x0000000004BB0000-0x0000000004CC4000-memory.dmp

Filesize
1.1MB

Download
memory/1248-13-0x0000000004BB0000-0x0000000004CC4000-memory.dmp

Filesize
1.1MB

Download
memory/1248-19-0x0000000004210000-0x00000000042B5000-memory.dmp

Filesize
660KB

Download
memory/1248-20-0x0000000004210000-0x00000000042B5000-memory.dmp

Filesize
660KB

Download
memory/1248-22-0x0000000004210000-0x00000000042B5000-memory.dmp

Filesize
660KB

Download
memory/2372-5-0x00000000002F0000-0x00000000002F4000-memory.dmp

Filesize
16KB

Download
memory/2556-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2556-7-0x00000000002F0000-0x00000000002F8000-memory.dmp

Filesize
32KB

Download
memory/2560-10-0x00000000006A0000-0x00000000006E6000-memory.dmp

Filesize
280KB

Download
memory/2560-11-0x00000000006A0000-0x00000000006E6000-memory.dmp

Filesize
280KB

Download
memory/2560-12-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing