formbook | cef37f3296f9a9d61a760a045c5ac55bd1110fee4ee9827aced0069981bc0dbe

General

Target

hgwblnwgct.exe
Size

74KB
MD5

4111e78e1b2f65a6c9cde6a549d337d9
SHA1

f3ab87fc6678f1f6f676fa3243dedb0728832dbc
SHA256

d45f7a637f385cac3c1b519a702d02fbf8d0bbfb883f87454ba352a4fec32bf4
SHA512

9c7cdefd0b3712210a1bd31df9306fe1cb371b242dd2c45d3f7365d7e202a046733e8b2645f41f7dd30149f6a12b1687442778fc0abe72c94b6f1958bf1719ec
SSDEEP

1536:dntSyjW68naQx9cSiWrX4ezsfNZPGMNftEdt8vklJssWXcdZpkBa:X8nDx9PJzsfNZPGMNfORlhZpkBa

Score

10^/10

formbook tsuz discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

tsuz

Decoy

7xznvXjpgziXgKV2gqDW

v7D1tLx/XXVj4TTJXNA=

Kksd/nV8o/fgptkq+1ql6A==

vJOH8u8W1nXX

iJ+tj7iKjquTOKxx/3r8KiNc63xxRA==

5xTbq0yL85f2O8soEE0aWGxrjA==

b4/knWkfwQCByw==

AnrOservDq83Fw92/GiG7pk9VAzP

o7ULEGiFpFC6VQ15RtI=

pcuYY7Ei2ReJqmM=

kNvNtWa/SQJpV3t4NFw83Ea4URzU

eGmxllMUuHzf

xwWU/I4R3RuT0A==

h4kM4poKqlXK9NCgTs8=

HkWLW5J3hL6vF2MFgsnAa5N5kpHF

u+nKjgM7r0ewzdd2gqDW

XE4s8ioNHndqM2P+krcGi9g=

OoVuNLkVoUGpwd56GXTPATwOJycptRJwdg==

n5cbiNrqOcpcqGw=

1dve5llFRkJ333E=

Signatures

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Control Panel\International\Geo\Nation	hgwblnwgct.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2496 set thread context of 2604	2496	hgwblnwgct.exe	29
PID 2604 set thread context of 1264	2604	hgwblnwgct.exe	20
PID 2608 set thread context of 1264	2608	cmstp.exe	20

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	hgwblnwgct.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmstp.exe

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
2604	hgwblnwgct.exe
2604	hgwblnwgct.exe
2604	hgwblnwgct.exe
2604	hgwblnwgct.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe
2608	cmstp.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2604	hgwblnwgct.exe
2604	hgwblnwgct.exe
2604	hgwblnwgct.exe
2608	cmstp.exe
2608	cmstp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2604	hgwblnwgct.exe
Token: SeDebugPrivilege	2608	cmstp.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2496 wrote to memory of 2604	2496	hgwblnwgct.exe	29
PID 2496 wrote to memory of 2604	2496	hgwblnwgct.exe	29
PID 2496 wrote to memory of 2604	2496	hgwblnwgct.exe	29
PID 2496 wrote to memory of 2604	2496	hgwblnwgct.exe	29
PID 2496 wrote to memory of 2604	2496	hgwblnwgct.exe	29
PID 1264 wrote to memory of 2608	1264	Explorer.EXE	30
PID 1264 wrote to memory of 2608	1264	Explorer.EXE	30
PID 1264 wrote to memory of 2608	1264	Explorer.EXE	30
PID 1264 wrote to memory of 2608	1264	Explorer.EXE	30
PID 1264 wrote to memory of 2608	1264	Explorer.EXE	30
PID 1264 wrote to memory of 2608	1264	Explorer.EXE	30
PID 1264 wrote to memory of 2608	1264	Explorer.EXE	30

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1264
- C:\Users\Admin\AppData\Local\Temp\hgwblnwgct.exe
  "C:\Users\Admin\AppData\Local\Temp\hgwblnwgct.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2496
- - C:\Users\Admin\AppData\Local\Temp\hgwblnwgct.exe
    "C:\Users\Admin\AppData\Local\Temp\hgwblnwgct.exe"
    3⤵
    - Checks computer location settings
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2604
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:2608

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

Loading Replay Monitor...

Downloads

memory/1264-5-0x00000000029B0000-0x0000000002AB0000-memory.dmp

Filesize
1024KB

Download
memory/1264-6-0x00000000068A0000-0x000000000699F000-memory.dmp

Filesize
1020KB

Download
memory/1264-11-0x00000000068A0000-0x000000000699F000-memory.dmp

Filesize
1020KB

Download
memory/2496-0-0x0000000000080000-0x0000000000082000-memory.dmp

Filesize
8KB

Download
memory/2604-2-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2604-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2604-4-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2604-8-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2608-9-0x00000000005C0000-0x00000000005D8000-memory.dmp

Filesize
96KB

Download
memory/2608-10-0x00000000005C0000-0x00000000005D8000-memory.dmp

Filesize
96KB

Download
memory/2608-12-0x0000000000090000-0x00000000000BD000-memory.dmp

Filesize
180KB

Download

Analysis

Sharing