formbook | b54b6ef71478646451ca1905b93c380141b4df637d73cb796af0a391ba47f43e

General

Target

file.exe
Size

742KB
MD5

25369cacd15fd28391f08b48ad5fdf4d
SHA1

f091fd2f772d7c566bcce4c046323ef02808f2da
SHA256

b54b6ef71478646451ca1905b93c380141b4df637d73cb796af0a391ba47f43e
SHA512

e13b6e32e1106f93f6a9fdf8a1871d4a60ca015d8c68a72ca557990dedb82da81c722a36a0a862f564b0809bd092da4bf2dfa9a809febc81b19413d534581598
SSDEEP

12288:ZjlIpHtMPku+l0CPPlzYUDbl3H7WZiga3jtuAEzY69hbnrF65FO28EYT/0:ZjlIhSPd+plzYu3+UuAEzY0h3FfxECs

Score

10^/10

formbook gd04 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

gd04

Decoy

f5u8utd50.icu

ob-offer-33304.bond

aaf.zone

hoppersrack.store

nline-gaming-33476.bond

isionaryvault.online

ilitary-jobs-88516.bond

iyxym.info

eyes.xyz

refle.xyz

kinsmonlkey.shop

oruu.shop

est2x2.online

nline-advertising-77889.bond

hepresspoolai.xyz

anilaberg.online

reimutigleben.store

anguage-courses-22450.bond

zzt.xyz

kfn.lat

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/2344-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2344-17-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2056-23-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2612	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2872 set thread context of 2344	2872	file.exe	28
PID 2344 set thread context of 1184	2344	file.exe	21
PID 2056 set thread context of 1184	2056	wlanext.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	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wlanext.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
2344	file.exe
2344	file.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe
2056	wlanext.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2344	file.exe
2344	file.exe
2344	file.exe
2056	wlanext.exe
2056	wlanext.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2344	file.exe
Token: SeDebugPrivilege	2056	wlanext.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 2344	2872	file.exe	28
PID 2872 wrote to memory of 2344	2872	file.exe	28
PID 2872 wrote to memory of 2344	2872	file.exe	28
PID 2872 wrote to memory of 2344	2872	file.exe	28
PID 2872 wrote to memory of 2344	2872	file.exe	28
PID 2872 wrote to memory of 2344	2872	file.exe	28
PID 2872 wrote to memory of 2344	2872	file.exe	28
PID 1184 wrote to memory of 2056	1184	Explorer.EXE	29
PID 1184 wrote to memory of 2056	1184	Explorer.EXE	29
PID 1184 wrote to memory of 2056	1184	Explorer.EXE	29
PID 1184 wrote to memory of 2056	1184	Explorer.EXE	29
PID 2056 wrote to memory of 2612	2056	wlanext.exe	32
PID 2056 wrote to memory of 2612	2056	wlanext.exe	32
PID 2056 wrote to memory of 2612	2056	wlanext.exe	32
PID 2056 wrote to memory of 2612	2056	wlanext.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1184
- C:\Users\Admin\AppData\Local\Temp\file.exe
  "C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2872
- - C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2344
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.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:2056
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\file.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2612

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/1184-19-0x0000000006D10000-0x0000000006E98000-memory.dmp

Filesize
1.5MB

Download
memory/1184-24-0x0000000006D10000-0x0000000006E98000-memory.dmp

Filesize
1.5MB

Download
memory/2056-23-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2056-22-0x0000000000290000-0x00000000002A6000-memory.dmp

Filesize
88KB

Download
memory/2056-20-0x0000000000290000-0x00000000002A6000-memory.dmp

Filesize
88KB

Download
memory/2344-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2344-15-0x0000000000700000-0x0000000000A03000-memory.dmp

Filesize
3.0MB

Download
memory/2344-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2344-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2344-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2344-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2344-18-0x0000000000450000-0x0000000000464000-memory.dmp

Filesize
80KB

Download
memory/2872-6-0x00000000008B0000-0x0000000000928000-memory.dmp

Filesize
480KB

Download
memory/2872-14-0x0000000074520000-0x0000000074C0E000-memory.dmp

Filesize
6.9MB

Download
memory/2872-0-0x000000007452E000-0x000000007452F000-memory.dmp

Filesize
4KB

Download
memory/2872-5-0x0000000074520000-0x0000000074C0E000-memory.dmp

Filesize
6.9MB

Download
memory/2872-4-0x000000007452E000-0x000000007452F000-memory.dmp

Filesize
4KB

Download
memory/2872-3-0x0000000000530000-0x0000000000556000-memory.dmp

Filesize
152KB

Download
memory/2872-2-0x0000000074520000-0x0000000074C0E000-memory.dmp

Filesize
6.9MB

Download
memory/2872-1-0x0000000001170000-0x0000000001230000-memory.dmp

Filesize
768KB

Download

Analysis

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