formbook | c89c37f0b5dc89251da6c37aa8e1071c43d52c80fd2326f1e6de8dcd5eaf0dfc

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
30-09-2024 18:40

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General

Target

docs.exe
Size

723KB
MD5

136dcc6497b13fe87bbad4aa5f859593
SHA1

9da85420d2681d65df6757f44a0c8055ce6c1fba
SHA256

c89c37f0b5dc89251da6c37aa8e1071c43d52c80fd2326f1e6de8dcd5eaf0dfc
SHA512

5e842aa0858845c4322c847fd2497cfe515a2ed62e36337978a020c061d6555cb19dbac58c6c988a97d3bfd88de66bfc4a4e96bf1c46e78d94c2435051cd1c91
SSDEEP

12288:21ZF8Kz3TPb4DryC6L1+0rs/yo05u30HzdHpGo1UV60QFLZSkR:2yeyrUp1o/4HiV60sZh

Score

10^/10

formbook c24t discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

c24t

Decoy

ealthbridgeccs.online

ngelicais.art

uktuksu1.sbs

fapoker.asia

hecreature.tech

orenzoplaybest14.xyz

op-smartphones-deal.today

delark.click

7395.asia

otnews.cfd

j16e.xyz

oko.events

fscxb.top

roudtxliberals.vote

asas-br.bond

ourhealthyourlife.shop

fbpd.top

j9u9.xyz

uijiuw.top

aming-chair-37588.bond

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/1556-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1556-17-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2720-70-0x0000000000880000-0x00000000008AF000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1688	powershell.exe

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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	docs.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3152 set thread context of 1556	3152	docs.exe	86
PID 1556 set thread context of 3428	1556	docs.exe	56
PID 2720 set thread context of 3428	2720	systray.exe	56

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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	systray.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	docs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
3152	docs.exe
3152	docs.exe
1556	docs.exe
1556	docs.exe
1556	docs.exe
1556	docs.exe
1688	powershell.exe
1688	powershell.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe
2720	systray.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1556	docs.exe
1556	docs.exe
1556	docs.exe
2720	systray.exe
2720	systray.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	3152	docs.exe
Token: SeDebugPrivilege	1556	docs.exe
Token: SeDebugPrivilege	1688	powershell.exe
Token: SeShutdownPrivilege	3428	Explorer.EXE
Token: SeCreatePagefilePrivilege	3428	Explorer.EXE
Token: SeDebugPrivilege	2720	systray.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3152 wrote to memory of 1688	3152	docs.exe	84
PID 3152 wrote to memory of 1688	3152	docs.exe	84
PID 3152 wrote to memory of 1688	3152	docs.exe	84
PID 3152 wrote to memory of 1556	3152	docs.exe	86
PID 3152 wrote to memory of 1556	3152	docs.exe	86
PID 3152 wrote to memory of 1556	3152	docs.exe	86
PID 3152 wrote to memory of 1556	3152	docs.exe	86
PID 3152 wrote to memory of 1556	3152	docs.exe	86
PID 3152 wrote to memory of 1556	3152	docs.exe	86
PID 3428 wrote to memory of 2720	3428	Explorer.EXE	87
PID 3428 wrote to memory of 2720	3428	Explorer.EXE	87
PID 3428 wrote to memory of 2720	3428	Explorer.EXE	87
PID 2720 wrote to memory of 1772	2720	systray.exe	91
PID 2720 wrote to memory of 1772	2720	systray.exe	91
PID 2720 wrote to memory of 1772	2720	systray.exe	91

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3428
- C:\Users\Admin\AppData\Local\Temp\docs.exe
  "C:\Users\Admin\AppData\Local\Temp\docs.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3152
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\docs.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1688
- - C:\Users\Admin\AppData\Local\Temp\docs.exe
    "C:\Users\Admin\AppData\Local\Temp\docs.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1556
- C:\Windows\SysWOW64\systray.exe
  "C:\Windows\SysWOW64\systray.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:2720
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\docs.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fcghvt13.wmb.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1556-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1556-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1556-18-0x00000000011A0000-0x00000000011B4000-memory.dmp

Filesize
80KB

Download
memory/1556-14-0x0000000001270000-0x00000000015BA000-memory.dmp

Filesize
3.3MB

Download
memory/1688-26-0x0000000005930000-0x0000000005996000-memory.dmp

Filesize
408KB

Download
memory/1688-57-0x00000000073E0000-0x00000000073EA000-memory.dmp

Filesize
40KB

Download
memory/1688-38-0x00000000060E0000-0x000000000612C000-memory.dmp

Filesize
304KB

Download
memory/1688-66-0x00000000746CE000-0x00000000746CF000-memory.dmp

Filesize
4KB

Download
memory/1688-67-0x0000000002570000-0x0000000002580000-memory.dmp

Filesize
64KB

Download
memory/1688-63-0x0000000007690000-0x0000000007698000-memory.dmp

Filesize
32KB

Download
memory/1688-62-0x00000000076B0000-0x00000000076CA000-memory.dmp

Filesize
104KB

Download
memory/1688-61-0x00000000075B0000-0x00000000075C4000-memory.dmp

Filesize
80KB

Download
memory/1688-60-0x00000000075A0000-0x00000000075AE000-memory.dmp

Filesize
56KB

Download
memory/1688-16-0x00000000746CE000-0x00000000746CF000-memory.dmp

Filesize
4KB

Download
memory/1688-20-0x0000000004A80000-0x0000000004AB6000-memory.dmp

Filesize
216KB

Download
memory/1688-19-0x0000000002570000-0x0000000002580000-memory.dmp

Filesize
64KB

Download
memory/1688-59-0x0000000007570000-0x0000000007581000-memory.dmp

Filesize
68KB

Download
memory/1688-58-0x00000000075F0000-0x0000000007686000-memory.dmp

Filesize
600KB

Download
memory/1688-22-0x0000000002570000-0x0000000002580000-memory.dmp

Filesize
64KB

Download
memory/1688-51-0x0000000007240000-0x000000000725E000-memory.dmp

Filesize
120KB

Download
memory/1688-37-0x0000000006040000-0x000000000605E000-memory.dmp

Filesize
120KB

Download
memory/1688-24-0x00000000050A0000-0x00000000050C2000-memory.dmp

Filesize
136KB

Download
memory/1688-56-0x0000000007370000-0x000000000738A000-memory.dmp

Filesize
104KB

Download
memory/1688-25-0x0000000005810000-0x0000000005876000-memory.dmp

Filesize
408KB

Download
memory/1688-55-0x00000000079B0000-0x000000000802A000-memory.dmp

Filesize
6.5MB

Download
memory/1688-36-0x0000000005AA0000-0x0000000005DF4000-memory.dmp

Filesize
3.3MB

Download
memory/1688-39-0x000000007F490000-0x000000007F4A0000-memory.dmp

Filesize
64KB

Download
memory/1688-54-0x0000000007260000-0x0000000007303000-memory.dmp

Filesize
652KB

Download
memory/1688-23-0x00000000050F0000-0x0000000005718000-memory.dmp

Filesize
6.2MB

Download
memory/1688-40-0x0000000006600000-0x0000000006632000-memory.dmp

Filesize
200KB

Download
memory/1688-41-0x00000000704E0000-0x000000007052C000-memory.dmp

Filesize
304KB

Download
memory/1688-53-0x0000000002570000-0x0000000002580000-memory.dmp

Filesize
64KB

Download
memory/1688-52-0x0000000002570000-0x0000000002580000-memory.dmp

Filesize
64KB

Download
memory/2720-70-0x0000000000880000-0x00000000008AF000-memory.dmp

Filesize
188KB

Download
memory/2720-65-0x0000000000050000-0x0000000000056000-memory.dmp

Filesize
24KB

Download
memory/2720-64-0x0000000000050000-0x0000000000056000-memory.dmp

Filesize
24KB

Download
memory/3152-5-0x00000000054E0000-0x00000000054EA000-memory.dmp

Filesize
40KB

Download
memory/3152-10-0x000000000C3A0000-0x000000000C43C000-memory.dmp

Filesize
624KB

Download
memory/3152-2-0x0000000005950000-0x0000000005EF4000-memory.dmp

Filesize
5.6MB

Download
memory/3152-3-0x0000000005440000-0x00000000054D2000-memory.dmp

Filesize
584KB

Download
memory/3152-4-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/3152-13-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/3152-6-0x0000000005860000-0x000000000587E000-memory.dmp

Filesize
120KB

Download
memory/3152-7-0x000000007464E000-0x000000007464F000-memory.dmp

Filesize
4KB

Download
memory/3152-0-0x000000007464E000-0x000000007464F000-memory.dmp

Filesize
4KB

Download
memory/3152-9-0x0000000002CC0000-0x0000000002D36000-memory.dmp

Filesize
472KB

Download
memory/3152-8-0x0000000074640000-0x0000000074DF0000-memory.dmp

Filesize
7.7MB

Download
memory/3152-1-0x0000000000AD0000-0x0000000000B88000-memory.dmp

Filesize
736KB

Download
memory/3428-21-0x00000000086D0000-0x000000000887B000-memory.dmp

Filesize
1.7MB

Download
memory/3428-74-0x0000000003270000-0x0000000003329000-memory.dmp

Filesize
740KB

Download