formbook | e752c4ee3b2c0db6221f94f88acc85bb622b3c9dfd94614dd432d4785ad84cf3

Analysis

max time kernel
269s
max time network
274s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
05-12-2022 10:28

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General

Target

srbgxywv96tp5kc.exe
Size

661KB
MD5

bc24bbabc84243feeaf0eb15d93ff488
SHA1

d3a2c9d7d4c3178875b52f095f4283404fdc348d
SHA256

e752c4ee3b2c0db6221f94f88acc85bb622b3c9dfd94614dd432d4785ad84cf3
SHA512

0f3f2603af9368587fb6f30bb763e0cb2291ac4e651cd1a5d44fb17407d056a1fe90a7fce17e1032862d355a3768620ccb3951e83659b92c0fb8202d65a29d0e
SSDEEP

12288:kPuYd+V6b1momPZefvB3bEZgN33pnxbB8Csck4U2E+z3SoVOdEIib9uaFskvQPuI:kPuYd+V6bIomxivNwZKnRsR8/CoMEBb4

Score

10^/10

formbook fqwu rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

fqwu

Decoy

N6XHavFRXQTRmNUkF9dn

EoaWTgFMmLFmUJ7CJNkTiGoj5A==

Dm+WNJDwSQa5cML3Q7EBiGoj5A==

nixR8ZCkOWjqrASBuic=

yvWQNApkdf4QYIih4+xUDY0=

RtmBQtDYDb50g8btXA==

8SU541y9Ec12NYK8PSOfA8OPpaphimY=

/yEvxvlAkquuY3W1QQ==

AlHZgYW4BiI9V+M=

YsHIUsAOO15j+9TnWA==

JJu1S7QIIMij0xUqlUtv

CmWBLrD98YnyUCCFvy0=

uPwhAVEvtu1rTuY=

PI6bR88GVGXmRlpxpKjtBpo=

GnL7qs9HVQAiF6ckF9dn

2zVeBFKZgO1rTuY=

2VI1VpOg7boCAFxvrWN3ys9rovE=

L1lO62zA2o1QEEZRQtgh7g==

brhF5dY1e3zmSyCFvy0=

U6m2TsEidTTdsA5kX8wh7g==

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer 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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	srbgxywv96tp5kc.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4700 set thread context of 5024	4700	srbgxywv96tp5kc.exe	86
PID 5024 set thread context of 2712	5024	srbgxywv96tp5kc.exe	38
PID 5024 set thread context of 2712	5024	srbgxywv96tp5kc.exe	38
PID 3936 set thread context of 2712	3936	explorer.exe	38

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4884	4172	WerFault.exe	16

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	explorer.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4700	srbgxywv96tp5kc.exe
4700	srbgxywv96tp5kc.exe
4700	srbgxywv96tp5kc.exe
4700	srbgxywv96tp5kc.exe
5024	srbgxywv96tp5kc.exe
5024	srbgxywv96tp5kc.exe
5024	srbgxywv96tp5kc.exe
5024	srbgxywv96tp5kc.exe
5024	srbgxywv96tp5kc.exe
5024	srbgxywv96tp5kc.exe
5024	srbgxywv96tp5kc.exe
5024	srbgxywv96tp5kc.exe
5024	srbgxywv96tp5kc.exe
5024	srbgxywv96tp5kc.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
5024	srbgxywv96tp5kc.exe
5024	srbgxywv96tp5kc.exe
5024	srbgxywv96tp5kc.exe
5024	srbgxywv96tp5kc.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe
3936	explorer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4700	srbgxywv96tp5kc.exe
Token: SeDebugPrivilege	5024	srbgxywv96tp5kc.exe
Token: SeDebugPrivilege	3936	explorer.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4700 wrote to memory of 4140	4700	srbgxywv96tp5kc.exe	84
PID 4700 wrote to memory of 4140	4700	srbgxywv96tp5kc.exe	84
PID 4700 wrote to memory of 4140	4700	srbgxywv96tp5kc.exe	84
PID 4700 wrote to memory of 5012	4700	srbgxywv96tp5kc.exe	85
PID 4700 wrote to memory of 5012	4700	srbgxywv96tp5kc.exe	85
PID 4700 wrote to memory of 5012	4700	srbgxywv96tp5kc.exe	85
PID 4700 wrote to memory of 5024	4700	srbgxywv96tp5kc.exe	86
PID 4700 wrote to memory of 5024	4700	srbgxywv96tp5kc.exe	86
PID 4700 wrote to memory of 5024	4700	srbgxywv96tp5kc.exe	86
PID 4700 wrote to memory of 5024	4700	srbgxywv96tp5kc.exe	86
PID 4700 wrote to memory of 5024	4700	srbgxywv96tp5kc.exe	86
PID 4700 wrote to memory of 5024	4700	srbgxywv96tp5kc.exe	86
PID 2712 wrote to memory of 3936	2712	Explorer.EXE	87
PID 2712 wrote to memory of 3936	2712	Explorer.EXE	87
PID 2712 wrote to memory of 3936	2712	Explorer.EXE	87
PID 3936 wrote to memory of 1672	3936	explorer.exe	94
PID 3936 wrote to memory of 1672	3936	explorer.exe	94
PID 3936 wrote to memory of 1672	3936	explorer.exe	94

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:2712
- C:\Users\Admin\AppData\Local\Temp\srbgxywv96tp5kc.exe
  "C:\Users\Admin\AppData\Local\Temp\srbgxywv96tp5kc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4700
- - C:\Users\Admin\AppData\Local\Temp\srbgxywv96tp5kc.exe
    "C:\Users\Admin\AppData\Local\Temp\srbgxywv96tp5kc.exe"
    3⤵
    PID:4140
- - C:\Users\Admin\AppData\Local\Temp\srbgxywv96tp5kc.exe
    "C:\Users\Admin\AppData\Local\Temp\srbgxywv96tp5kc.exe"
    3⤵
    PID:5012
- - C:\Users\Admin\AppData\Local\Temp\srbgxywv96tp5kc.exe
    "C:\Users\Admin\AppData\Local\Temp\srbgxywv96tp5kc.exe"
    3⤵
    - Checks computer location settings
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:5024
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.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:3936
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1672

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 460 -p 4172 -ip 4172
1⤵
PID:1708

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 4172 -s 1116
1⤵
- Program crash
PID:4884

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2712-150-0x0000000007F70000-0x0000000008101000-memory.dmp

Filesize
1.6MB

Download
memory/2712-147-0x0000000002C60000-0x0000000002DEA000-memory.dmp

Filesize
1.5MB

Download
memory/2712-160-0x0000000008110000-0x0000000008254000-memory.dmp

Filesize
1.3MB

Download
memory/2712-159-0x0000000008110000-0x0000000008254000-memory.dmp

Filesize
1.3MB

Download
memory/3936-156-0x0000000002D10000-0x000000000305A000-memory.dmp

Filesize
3.3MB

Download
memory/3936-154-0x0000000000560000-0x0000000000993000-memory.dmp

Filesize
4.2MB

Download
memory/3936-155-0x0000000000CA0000-0x0000000000CCD000-memory.dmp

Filesize
180KB

Download
memory/3936-151-0x0000000000000000-mapping.dmp

Download
memory/3936-158-0x0000000000CA0000-0x0000000000CCD000-memory.dmp

Filesize
180KB

Download
memory/3936-157-0x0000000002AF0000-0x0000000002B7F000-memory.dmp

Filesize
572KB

Download
memory/4140-137-0x0000000000000000-mapping.dmp

Download
memory/4700-136-0x00000000063B0000-0x000000000644C000-memory.dmp

Filesize
624KB

Download
memory/4700-132-0x0000000000CB0000-0x0000000000D5C000-memory.dmp

Filesize
688KB

Download
memory/4700-135-0x00000000056F0000-0x00000000056FA000-memory.dmp

Filesize
40KB

Download
memory/4700-134-0x0000000005740000-0x00000000057D2000-memory.dmp

Filesize
584KB

Download
memory/4700-133-0x0000000005CF0000-0x0000000006294000-memory.dmp

Filesize
5.6MB

Download
memory/5012-138-0x0000000000000000-mapping.dmp

Download
memory/5024-146-0x0000000001340000-0x0000000001350000-memory.dmp

Filesize
64KB

Download
memory/5024-152-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/5024-153-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/5024-149-0x00000000031C0000-0x00000000031D0000-memory.dmp

Filesize
64KB

Download
memory/5024-148-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/5024-144-0x0000000001360000-0x00000000016AA000-memory.dmp

Filesize
3.3MB

Download
memory/5024-143-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/5024-142-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/5024-140-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/5024-139-0x0000000000000000-mapping.dmp

Download