formbook | e1902171c2bba8b0280e747ec2457209c1b32bf899d85f241c2993fdcba1ac31

General

Target

RFQ232110.exe
Size

665KB
MD5

d57281188377857e91520a46ad75a1d8
SHA1

2b99fd634fde701062cb163bfdc5c410a872e50f
SHA256

e1902171c2bba8b0280e747ec2457209c1b32bf899d85f241c2993fdcba1ac31
SHA512

89f5424a818efd91c13acb7f38c3a9b0d1959abada6e5aba96dec591b1ce275cac26b00a94371f7fe90d1f250b9370ac089c0253392eda96fa9e11d032868719
SSDEEP

12288:mLNhkYRig7eFSYOErtXYHaVely7tpdV84KkRfAovmE:SHag7WnvhDT7L84Kb5E

Score

10^/10

formbook cu29 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

cu29

Decoy

qidr.shop

usinessaviationconsulting.net

68716329.xyz

nd-los.net

ealthironcladguarantee.shop

oftware-download-69354.bond

48372305.top

omeownershub.top

mall-chilli.top

ajakgoid.online

ire-changer-53482.bond

rugsrx.shop

oyang123.info

azino-forum-pro.online

817715.rest

layman.vip

eb777.club

ovatonica.net

urgaslotvip.website

inn-paaaa.buzz

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2932-12-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2932-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1120 set thread context of 2932	1120	RFQ232110.exe	29
PID 2932 set thread context of 1272	2932	vbc.exe	20

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2840	2872	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	RFQ232110.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2932	vbc.exe
2932	vbc.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2932	vbc.exe
2932	vbc.exe
2932	vbc.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2932	vbc.exe
Token: SeShutdownPrivilege	1272	Explorer.EXE
Token: SeShutdownPrivilege	1272	Explorer.EXE
Token: SeShutdownPrivilege	1272	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1120 wrote to memory of 2932	1120	RFQ232110.exe	29
PID 1120 wrote to memory of 2932	1120	RFQ232110.exe	29
PID 1120 wrote to memory of 2932	1120	RFQ232110.exe	29
PID 1120 wrote to memory of 2932	1120	RFQ232110.exe	29
PID 1120 wrote to memory of 2932	1120	RFQ232110.exe	29
PID 1120 wrote to memory of 2932	1120	RFQ232110.exe	29
PID 1120 wrote to memory of 2932	1120	RFQ232110.exe	29
PID 1272 wrote to memory of 2872	1272	Explorer.EXE	31
PID 1272 wrote to memory of 2872	1272	Explorer.EXE	31
PID 1272 wrote to memory of 2872	1272	Explorer.EXE	31
PID 1272 wrote to memory of 2872	1272	Explorer.EXE	31
PID 1272 wrote to memory of 2872	1272	Explorer.EXE	31
PID 1272 wrote to memory of 2872	1272	Explorer.EXE	31
PID 1272 wrote to memory of 2872	1272	Explorer.EXE	31
PID 2872 wrote to memory of 2840	2872	msiexec.exe	32
PID 2872 wrote to memory of 2840	2872	msiexec.exe	32
PID 2872 wrote to memory of 2840	2872	msiexec.exe	32
PID 2872 wrote to memory of 2840	2872	msiexec.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1272
- C:\Users\Admin\AppData\Local\Temp\RFQ232110.exe
  "C:\Users\Admin\AppData\Local\Temp\RFQ232110.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1120
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2932
- C:\Windows\SysWOW64\autofmt.exe
  "C:\Windows\SysWOW64\autofmt.exe"
  2⤵
  PID:2704
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\SysWOW64\msiexec.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2872
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2872 -s 272
    3⤵
    - Program crash
    PID:2840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

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

Loading Replay Monitor...

Downloads

memory/1120-13-0x0000000074440000-0x0000000074B2E000-memory.dmp

Filesize
6.9MB

Download
memory/1120-1-0x0000000000EE0000-0x0000000000F8C000-memory.dmp

Filesize
688KB

Download
memory/1120-2-0x0000000074440000-0x0000000074B2E000-memory.dmp

Filesize
6.9MB

Download
memory/1120-3-0x0000000000480000-0x0000000000498000-memory.dmp

Filesize
96KB

Download
memory/1120-4-0x000000007444E000-0x000000007444F000-memory.dmp

Filesize
4KB

Download
memory/1120-5-0x0000000074440000-0x0000000074B2E000-memory.dmp

Filesize
6.9MB

Download
memory/1120-6-0x0000000004EB0000-0x0000000004F26000-memory.dmp

Filesize
472KB

Download
memory/1120-0-0x000000007444E000-0x000000007444F000-memory.dmp

Filesize
4KB

Download
memory/1272-18-0x0000000006ED0000-0x000000000706A000-memory.dmp

Filesize
1.6MB

Download
memory/1272-25-0x0000000006ED0000-0x000000000706A000-memory.dmp

Filesize
1.6MB

Download
memory/2872-19-0x00000000007D0000-0x00000000007E4000-memory.dmp

Filesize
80KB

Download
memory/2872-20-0x00000000007D0000-0x00000000007E4000-memory.dmp

Filesize
80KB

Download
memory/2872-22-0x00000000007D0000-0x00000000007E4000-memory.dmp

Filesize
80KB

Download
memory/2932-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2932-11-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2932-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2932-14-0x0000000000A00000-0x0000000000D03000-memory.dmp

Filesize
3.0MB

Download
memory/2932-17-0x0000000000180000-0x0000000000195000-memory.dmp

Filesize
84KB

Download
memory/2932-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2932-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing