formbook | 049549f50f5dd8774148408e909bee0ae120ef176386ed3857ed77c9b52e6667

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27/10/2022, 23:43

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General

Target

mary.exe
Size

56KB
MD5

e8bf77b057a93cafe70b86fdb9da6aed
SHA1

53f70d6a1f0a48522d90e1612bdf3c4b122fc504
SHA256

f53340a00d5248f81164bd5a1880698c4926cf62dc2fc5c93696f87780733b1a
SHA512

56d4f69822d9790caec4d53a3112038c7b0b518c013638ad7865dbd7a5e80d3d46b4da5d6170e888f5f3ae6c58231b2c3fbc7763f3107965eedb52b05d46461f
SSDEEP

768:k8s3JoK3x2Ncv+kIQZ5N9Fe6HmBouzruiRPPrk+FP:kB36I1vxIMW6HmBxuixPd

Score

10^/10

formbook bbuy rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

bbuy

Decoy

wqbqKCTkCwjtbad3vwJI6Z+a

EqD7JRhUV2ZQDnU=

UlWd0LffZzZeGY0BzkxroA==

sAbXk3SNlPOcRleKI+k=

HCpzqZKnJGDpf+qsxnOnvQ==

vGdG6Ezu8mctzfLnmX/FLDeiPS3M

tcctT/pPwrv7mdA0aw==

Tr6fUz4Ae0mrGA==

NxZtBUfk3aqxS1eKI+k=

TSUVzyy9hBs65j7xXSRVBx+M

fObBavCu4OEt/0pTr98J

2ap9Oy1p8MQP+EtTr98J

FL4Q0TXr1iHWjezVUdQtFT4=

kSFvf2KUliCDOWwacw==

ctqtSLZvqqr/xym6xnOnvQ==

8DqrrnN58fVC

fIrZCP4xwLt7CkGppluStw==

PFKUNZxcpLCtk6yjMus=

4CKOs2UMhs9P8EvLAXO1Hj8aNA==

0pEGOQOa0+SOV9AnYg==

Signatures

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

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3452 set thread context of 3264	3452	mary.exe	84
PID 3264 set thread context of 2432	3264	aspnet_compiler.exe	49
PID 4672 set thread context of 2432	4672	cmmon32.exe	49

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmmon32.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
3264	aspnet_compiler.exe
3264	aspnet_compiler.exe
3264	aspnet_compiler.exe
3264	aspnet_compiler.exe
3264	aspnet_compiler.exe
3264	aspnet_compiler.exe
3264	aspnet_compiler.exe
3264	aspnet_compiler.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2432	Explorer.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
3264	aspnet_compiler.exe
3264	aspnet_compiler.exe
3264	aspnet_compiler.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe
4672	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3452	mary.exe
Token: SeDebugPrivilege	3264	aspnet_compiler.exe
Token: SeDebugPrivilege	4672	cmmon32.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3452 wrote to memory of 3264	3452	mary.exe	84
PID 3452 wrote to memory of 3264	3452	mary.exe	84
PID 3452 wrote to memory of 3264	3452	mary.exe	84
PID 3452 wrote to memory of 3264	3452	mary.exe	84
PID 3452 wrote to memory of 3264	3452	mary.exe	84
PID 3452 wrote to memory of 3264	3452	mary.exe	84
PID 2432 wrote to memory of 4672	2432	Explorer.EXE	85
PID 2432 wrote to memory of 4672	2432	Explorer.EXE	85
PID 2432 wrote to memory of 4672	2432	Explorer.EXE	85
PID 4672 wrote to memory of 2732	4672	cmmon32.exe	90
PID 4672 wrote to memory of 2732	4672	cmmon32.exe	90
PID 4672 wrote to memory of 2732	4672	cmmon32.exe	90

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Users\Admin\AppData\Local\Temp\mary.exe
  "C:\Users\Admin\AppData\Local\Temp\mary.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3452
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3264
- C:\Windows\SysWOW64\cmmon32.exe
  "C:\Windows\SysWOW64\cmmon32.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4672
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:2732

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2432-142-0x00000000076F0000-0x000000000788E000-memory.dmp

Filesize
1.6MB

Download
memory/2432-150-0x0000000007970000-0x0000000007A3C000-memory.dmp

Filesize
816KB

Download
memory/2432-148-0x0000000007970000-0x0000000007A3C000-memory.dmp

Filesize
816KB

Download
memory/3264-141-0x0000000001410000-0x0000000001420000-memory.dmp

Filesize
64KB

Download
memory/3264-134-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3264-138-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/3264-139-0x0000000001980000-0x0000000001CCA000-memory.dmp

Filesize
3.3MB

Download
memory/3264-140-0x0000000000422000-0x0000000000424000-memory.dmp

Filesize
8KB

Download
memory/3264-136-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3264-137-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3452-132-0x0000000000DE0000-0x0000000000DF2000-memory.dmp

Filesize
72KB

Download
memory/4672-146-0x0000000003020000-0x000000000336A000-memory.dmp

Filesize
3.3MB

Download
memory/4672-147-0x0000000002CC0000-0x0000000002D4F000-memory.dmp

Filesize
572KB

Download
memory/4672-145-0x0000000000D80000-0x0000000000DAD000-memory.dmp

Filesize
180KB

Download
memory/4672-149-0x0000000000D80000-0x0000000000DAD000-memory.dmp

Filesize
180KB

Download
memory/4672-144-0x0000000000EF0000-0x0000000000EFC000-memory.dmp

Filesize
48KB

Download