formbook | b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260

General

Target

b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe
Size

1.3MB
MD5

75a969be7c422af6c6a23ad1ddf5a3d1
SHA1

212b7524b811796cbfc84ab234000a131b349904
SHA256

b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260
SHA512

a19d5de2628f724cb1405cba7b345b35e686d1d182c579cba6b1ed61390495ee0143a0b040b12c975790ac9f9f11672075ad4aca42ed4c2554a6a8f24bed3f6b
SSDEEP

24576:5qDEvCTbMWu7rQYlBQcBiT6rprG8aEw09a/RFr8zHiA:5TvC/MTQYxsWR7aEw4aX8

Score

10^/10

formbook a38m discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

a38m

Decoy

rtfosters.net

ental-implants-97548.bond

raphic-design-degree-15820.bond

ompraninjas.shop

indmyusedcar.today

rumptraumasupport.net

uozwear.xyz

etron.xyz

dultlivebroadcast09.today

ypegen.net

arehouse-inventory-54057.bond

27961.pizza

ortable-ai.xyz

pioxc.xyz

nline-advertising-76059.bond

rendyshack.store

pa-services88.life

aftarpragmatic218gacor.online

yb1054.shop

8x189.xyz

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/2380-3-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2380-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2380-10-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1920 set thread context of 2380	1920	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe	30
PID 2380 set thread context of 1236	2380	svchost.exe	21
PID 2380 set thread context of 1236	2380	svchost.exe	21

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2472	2800	WerFault.exe	31

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	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2380	svchost.exe
2380	svchost.exe
2380	svchost.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1920	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe
2380	svchost.exe
2380	svchost.exe
2380	svchost.exe
2380	svchost.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2380	svchost.exe
Token: SeShutdownPrivilege	1236	Explorer.EXE
Token: SeShutdownPrivilege	1236	Explorer.EXE
Token: SeShutdownPrivilege	1236	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1920	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe
1920	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe
1236	Explorer.EXE
1236	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1920	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe
1920	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1920 wrote to memory of 2380	1920	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe	30
PID 1920 wrote to memory of 2380	1920	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe	30
PID 1920 wrote to memory of 2380	1920	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe	30
PID 1920 wrote to memory of 2380	1920	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe	30
PID 1920 wrote to memory of 2380	1920	b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe	30
PID 2380 wrote to memory of 2800	2380	svchost.exe	31
PID 2380 wrote to memory of 2800	2380	svchost.exe	31
PID 2380 wrote to memory of 2800	2380	svchost.exe	31
PID 2380 wrote to memory of 2800	2380	svchost.exe	31
PID 2380 wrote to memory of 2800	2380	svchost.exe	31
PID 2380 wrote to memory of 2800	2380	svchost.exe	31
PID 2380 wrote to memory of 2800	2380	svchost.exe	31
PID 2800 wrote to memory of 2472	2800	msiexec.exe	32
PID 2800 wrote to memory of 2472	2800	msiexec.exe	32
PID 2800 wrote to memory of 2472	2800	msiexec.exe	32
PID 2800 wrote to memory of 2472	2800	msiexec.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:1236
- C:\Users\Admin\AppData\Local\Temp\b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe
  "C:\Users\Admin\AppData\Local\Temp\b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.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:1920
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260.exe"
    3⤵
    - 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:2380
  - - C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\SysWOW64\msiexec.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:2800
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2800 -s 268
        5⤵
        Program crash
        
        PID:2472

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/1236-14-0x0000000004B60000-0x0000000004C3D000-memory.dmp

Filesize
884KB

Download
memory/1236-8-0x0000000004B60000-0x0000000004C3D000-memory.dmp

Filesize
884KB

Download
memory/1236-13-0x0000000006F30000-0x00000000070DA000-memory.dmp

Filesize
1.7MB

Download
memory/1236-21-0x0000000006F30000-0x00000000070DA000-memory.dmp

Filesize
1.7MB

Download
memory/1920-2-0x0000000000C00000-0x0000000001000000-memory.dmp

Filesize
4.0MB

Download
memory/2380-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2380-4-0x00000000008D0000-0x0000000000BD3000-memory.dmp

Filesize
3.0MB

Download
memory/2380-7-0x00000000001D0000-0x00000000001E4000-memory.dmp

Filesize
80KB

Download
memory/2380-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2380-11-0x0000000000210000-0x0000000000224000-memory.dmp

Filesize
80KB

Download
memory/2380-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2800-18-0x0000000000660000-0x0000000000674000-memory.dmp

Filesize
80KB

Download
memory/2800-15-0x0000000000660000-0x0000000000674000-memory.dmp

Filesize
80KB

Download
memory/2800-16-0x0000000000660000-0x0000000000674000-memory.dmp

Filesize
80KB

Download

Analysis

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