formbook | 877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8

General

Target

877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8.exe
Size

1.1MB
MD5

7b7783dff1083e8bb1d8fe8e98ed2b95
SHA1

8e3f34ae832960569357b279e85a8e3cc1c3a766
SHA256

877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8
SHA512

9a4dc41b079ca265c556002622cb15fcf98e9134f97a9f91af38c68f75fd3c6a4a43f79db7a24b6a95db540bb761c7f0d66e09a5f0298c937dbd087cbada022a
SSDEEP

24576:btb20pkaCqT5TBWgNQ7aK4rc4CuoSnqbV6A+:YVg5tQ7aK4r1oSqx5+

Score

10^/10

formbook ud04 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ud04

Decoy

oum7.pro

ovonordisk.online

akrzus.pro

tendmtedcpsa.site

mm.foo

animevyhgsft29817.click

digdxxb.info

1130.vip

uy-now-pay-later-74776.bond

ybzert.online

edcn.link

rime-flow-bay.xyz

nd777id.beauty

otoyama.shop

lranchomx.xyz

unluoren.top

uglesang-troms.net

udulbet88.net

raquewear.shop

ijanarko.net

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/2388-7-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2388-10-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2156-15-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 320 set thread context of 2388	320	877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8.exe	31
PID 2388 set thread context of 1192	2388	svchost.exe	21
PID 2156 set thread context of 1192	2156	chkdsk.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	877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8.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 25 IoCs

pid	Process
2388	svchost.exe
2388	svchost.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe
2156	chkdsk.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
320	877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8.exe
2388	svchost.exe
2388	svchost.exe
2388	svchost.exe
2156	chkdsk.exe
2156	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2388	svchost.exe
Token: SeDebugPrivilege	2156	chkdsk.exe

Suspicious use of FindShellTrayWindow 6 IoCs

pid	Process
320	877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8.exe
320	877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8.exe
1192	Explorer.EXE
1192	Explorer.EXE
1192	Explorer.EXE
1192	Explorer.EXE

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
320	877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8.exe
320	877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8.exe
1192	Explorer.EXE
1192	Explorer.EXE

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 320 wrote to memory of 2388	320	877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8.exe	31
PID 320 wrote to memory of 2388	320	877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8.exe	31
PID 320 wrote to memory of 2388	320	877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8.exe	31
PID 320 wrote to memory of 2388	320	877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8.exe	31
PID 320 wrote to memory of 2388	320	877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8.exe	31
PID 1192 wrote to memory of 2156	1192	Explorer.EXE	32
PID 1192 wrote to memory of 2156	1192	Explorer.EXE	32
PID 1192 wrote to memory of 2156	1192	Explorer.EXE	32
PID 1192 wrote to memory of 2156	1192	Explorer.EXE	32
PID 2156 wrote to memory of 2220	2156	chkdsk.exe	33
PID 2156 wrote to memory of 2220	2156	chkdsk.exe	33
PID 2156 wrote to memory of 2220	2156	chkdsk.exe	33
PID 2156 wrote to memory of 2220	2156	chkdsk.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1192
- C:\Users\Admin\AppData\Local\Temp\877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8.exe
  "C:\Users\Admin\AppData\Local\Temp\877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8.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:320
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\877e35b50ea837ca88d9276a4c567a4fe60219bcfdd32de9eeb604693fb11ef8.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2388
- 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:2156
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2220

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

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/320-6-0x0000000000870000-0x0000000000C70000-memory.dmp

Filesize
4.0MB

Download
memory/1192-25-0x0000000005410000-0x0000000005514000-memory.dmp

Filesize
1.0MB

Download
memory/1192-23-0x0000000005410000-0x0000000005514000-memory.dmp

Filesize
1.0MB

Download
memory/1192-22-0x0000000005410000-0x0000000005514000-memory.dmp

Filesize
1.0MB

Download
memory/1192-16-0x0000000004E80000-0x0000000004F6B000-memory.dmp

Filesize
940KB

Download
memory/1192-12-0x0000000004E80000-0x0000000004F6B000-memory.dmp

Filesize
940KB

Download
memory/2156-13-0x00000000004B0000-0x00000000004B7000-memory.dmp

Filesize
28KB

Download
memory/2156-14-0x00000000004B0000-0x00000000004B7000-memory.dmp

Filesize
28KB

Download
memory/2156-15-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2388-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2388-11-0x00000000001E0000-0x00000000001F4000-memory.dmp

Filesize
80KB

Download
memory/2388-8-0x00000000008E0000-0x0000000000BE3000-memory.dmp

Filesize
3.0MB

Download
memory/2388-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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