formbook | 02fea259c2c89804f3847b05591768235e18208a7ee86a7f9b8da25d808122de

General

Target

sRdjnXWxDaXi9aM.exe
Size

570KB
MD5

f4347ab1a21a8d5bb89536d4a0dc74c1
SHA1

13eda0794dce375300168f1c25141afe696cac44
SHA256

c66ab9498121b281c66643a069b22ef3f5d8eee36b9f36ce627eb91f09111d11
SHA512

d6cfd2276a6d8d4abf6e309093fa4f9d14cc4c8d675e711ec40e1f558da1fece67875f91bf720ca9a15d10d8659969c372d2822cdfd6fd82b8746b54d4c25fb8
SSDEEP

12288:2m7kvkyLcUWt96d/We0LyHvo4mmAA7c/H3r0jxqYZMWx8pbUiQJAiif:2moxwjL6tmIqrIcYt6e3Pif

Score

10^/10

formbook b31a discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

b31a

Decoy

enjamin-paaac.buzz

mail-marketing-40950.bond

pusems28-post.cyou

hindo.top

ruck-company-be.today

asinos-deutschland.net

ewancash.boats

etdopovo.casino

rcher-saaac.buzz

871166.vip

manuel.app

g3yqo.shop

-9way.xyz

qawgytfexe.bond

iefi6834.vip

ental-health-35901.bond

idat-merkez18.top

rojectleadzone.website

lirudolph.top

migloballlc.online

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
behavioral1/memory/2432-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2432-18-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2852-23-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2724	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2072 set thread context of 2432	2072	sRdjnXWxDaXi9aM.exe	31
PID 2432 set thread context of 1424	2432	sRdjnXWxDaXi9aM.exe	21
PID 2852 set thread context of 1424	2852	wininit.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	sRdjnXWxDaXi9aM.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wininit.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2072	sRdjnXWxDaXi9aM.exe
2072	sRdjnXWxDaXi9aM.exe
2432	sRdjnXWxDaXi9aM.exe
2432	sRdjnXWxDaXi9aM.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe
2852	wininit.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2432	sRdjnXWxDaXi9aM.exe
2432	sRdjnXWxDaXi9aM.exe
2432	sRdjnXWxDaXi9aM.exe
2852	wininit.exe
2852	wininit.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2072	sRdjnXWxDaXi9aM.exe
Token: SeDebugPrivilege	2432	sRdjnXWxDaXi9aM.exe
Token: SeDebugPrivilege	2852	wininit.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 2432	2072	sRdjnXWxDaXi9aM.exe	31
PID 2072 wrote to memory of 2432	2072	sRdjnXWxDaXi9aM.exe	31
PID 2072 wrote to memory of 2432	2072	sRdjnXWxDaXi9aM.exe	31
PID 2072 wrote to memory of 2432	2072	sRdjnXWxDaXi9aM.exe	31
PID 2072 wrote to memory of 2432	2072	sRdjnXWxDaXi9aM.exe	31
PID 2072 wrote to memory of 2432	2072	sRdjnXWxDaXi9aM.exe	31
PID 2072 wrote to memory of 2432	2072	sRdjnXWxDaXi9aM.exe	31
PID 1424 wrote to memory of 2852	1424	Explorer.EXE	32
PID 1424 wrote to memory of 2852	1424	Explorer.EXE	32
PID 1424 wrote to memory of 2852	1424	Explorer.EXE	32
PID 1424 wrote to memory of 2852	1424	Explorer.EXE	32
PID 2852 wrote to memory of 2724	2852	wininit.exe	33
PID 2852 wrote to memory of 2724	2852	wininit.exe	33
PID 2852 wrote to memory of 2724	2852	wininit.exe	33
PID 2852 wrote to memory of 2724	2852	wininit.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1424
- C:\Users\Admin\AppData\Local\Temp\sRdjnXWxDaXi9aM.exe
  "C:\Users\Admin\AppData\Local\Temp\sRdjnXWxDaXi9aM.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2072
- - C:\Users\Admin\AppData\Local\Temp\sRdjnXWxDaXi9aM.exe
    "C:\Users\Admin\AppData\Local\Temp\sRdjnXWxDaXi9aM.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2432
- C:\Windows\SysWOW64\wininit.exe
  "C:\Windows\SysWOW64\wininit.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:2852
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\sRdjnXWxDaXi9aM.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2724

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

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Downloads

memory/1424-20-0x0000000007DA0000-0x0000000007EC1000-memory.dmp

Filesize
1.1MB

Download
memory/1424-24-0x0000000007DA0000-0x0000000007EC1000-memory.dmp

Filesize
1.1MB

Download
memory/2072-5-0x0000000074850000-0x0000000074F3E000-memory.dmp

Filesize
6.9MB

Download
memory/2072-2-0x0000000074850000-0x0000000074F3E000-memory.dmp

Filesize
6.9MB

Download
memory/2072-4-0x000000007485E000-0x000000007485F000-memory.dmp

Filesize
4KB

Download
memory/2072-0-0x000000007485E000-0x000000007485F000-memory.dmp

Filesize
4KB

Download
memory/2072-6-0x0000000000B60000-0x0000000000BD6000-memory.dmp

Filesize
472KB

Download
memory/2072-1-0x00000000011A0000-0x0000000001234000-memory.dmp

Filesize
592KB

Download
memory/2072-3-0x0000000000250000-0x0000000000260000-memory.dmp

Filesize
64KB

Download
memory/2072-15-0x0000000074850000-0x0000000074F3E000-memory.dmp

Filesize
6.9MB

Download
memory/2432-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2432-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2432-16-0x0000000000A60000-0x0000000000D63000-memory.dmp

Filesize
3.0MB

Download
memory/2432-19-0x0000000000160000-0x0000000000174000-memory.dmp

Filesize
80KB

Download
memory/2432-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2432-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2432-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2852-22-0x00000000004F0000-0x000000000050A000-memory.dmp

Filesize
104KB

Download
memory/2852-21-0x00000000004F0000-0x000000000050A000-memory.dmp

Filesize
104KB

Download
memory/2852-23-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

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