formbook | 01fa11bf9cf821372575e12496a281db3c0edd99043f5a30351f218380028c79

General

Target

iwszswbfva.exe
Size

7KB
MD5

256173eb182e2853cbfa0590dfb0cb3a
SHA1

c8eadb0d069644a491368497e91d737e4dc41754
SHA256

15b35b8bd2d2e94f656e77a105e3ef99946b02c41d773d118ab0c64db578eb5d
SHA512

22e88b1ed25e5f8391497255a8bdc7ea1aef876f3f3c9547e334436d8f250c8cc5c45c344b79c7009d15c9556235086190bc2a3bfb637cd3eaa67824cea78af2
SSDEEP

96:B5AgpWlt+6vtR/c8CGzNyR5dj+5qB+STbjCXv+:wgUlXrCGud65nSfjCXv+

Score

10^/10

formbook wh23 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

wh23

Decoy

ow9vyvfee.com

alvis.one

mutantgobz.claims

plynofon.com

southofkingst.store

nuvidamedspa.com

coffeeforyou56.com

opaletechevents.com

momobar.life

abcmousu.com

learnicd-11.com

tipokin.xyz

kahvezevki.com

suratdimond.com

oldartists.best

infoepic.info

mattresslabo.com

skarlmotors.com

cl9319x.xyz

med49app.net

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
behavioral3/memory/2360-1-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral3/memory/2360-4-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral3/memory/444-10-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
1540	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2156 set thread context of 2360	2156	iwszswbfva.exe	30
PID 2360 set thread context of 1216	2360	iwszswbfva.exe	21
PID 444 set thread context of 1216	444	msdt.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	iwszswbfva.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2360	iwszswbfva.exe
2360	iwszswbfva.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe
444	msdt.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2156	iwszswbfva.exe
2360	iwszswbfva.exe
2360	iwszswbfva.exe
2360	iwszswbfva.exe
444	msdt.exe
444	msdt.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2360	iwszswbfva.exe
Token: SeDebugPrivilege	444	msdt.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 2360	2156	iwszswbfva.exe	30
PID 2156 wrote to memory of 2360	2156	iwszswbfva.exe	30
PID 2156 wrote to memory of 2360	2156	iwszswbfva.exe	30
PID 2156 wrote to memory of 2360	2156	iwszswbfva.exe	30
PID 2156 wrote to memory of 2360	2156	iwszswbfva.exe	30
PID 1216 wrote to memory of 444	1216	Explorer.EXE	31
PID 1216 wrote to memory of 444	1216	Explorer.EXE	31
PID 1216 wrote to memory of 444	1216	Explorer.EXE	31
PID 1216 wrote to memory of 444	1216	Explorer.EXE	31
PID 444 wrote to memory of 1540	444	msdt.exe	32
PID 444 wrote to memory of 1540	444	msdt.exe	32
PID 444 wrote to memory of 1540	444	msdt.exe	32
PID 444 wrote to memory of 1540	444	msdt.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1216
- C:\Users\Admin\AppData\Local\Temp\iwszswbfva.exe
  "C:\Users\Admin\AppData\Local\Temp\iwszswbfva.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:2156
- - C:\Users\Admin\AppData\Local\Temp\iwszswbfva.exe
    "C:\Users\Admin\AppData\Local\Temp\iwszswbfva.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2360
- C:\Windows\SysWOW64\msdt.exe
  "C:\Windows\SysWOW64\msdt.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:444
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\iwszswbfva.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:1540

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/444-8-0x0000000000250000-0x0000000000344000-memory.dmp

Filesize
976KB

Download
memory/444-9-0x0000000000250000-0x0000000000344000-memory.dmp

Filesize
976KB

Download
memory/444-10-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/1216-7-0x0000000005090000-0x00000000051CC000-memory.dmp

Filesize
1.2MB

Download
memory/1216-11-0x0000000005090000-0x00000000051CC000-memory.dmp

Filesize
1.2MB

Download
memory/2156-0-0x0000000000160000-0x0000000000162000-memory.dmp

Filesize
8KB

Download
memory/2360-1-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2360-2-0x0000000000A00000-0x0000000000D03000-memory.dmp

Filesize
3.0MB

Download
memory/2360-5-0x0000000000140000-0x0000000000154000-memory.dmp

Filesize
80KB

Download
memory/2360-4-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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