formbook | 3a2e31f2844df5cb91eedbf24c0b93de4b0aa08525f733132c2bce0d7ab81acc

Resubmissions

10-11-2024 21:28

241110-1bhk6avgrr 10

Analysis

max time kernel
1793s
max time network
1817s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-11-2024 02:47

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General

Target

10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe
Size

647KB
MD5

92e6f05295ae825d4f3d9982a616b98e
SHA1

eb73f950397f919df73442f66cbd15deee931cea
SHA256

10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1
SHA512

100e49ead6c63aba1470ebad85d969310741cc6d7c8d974551ffa07aa1923dec4f4153d363387328c493198ad98bf7535f2f4e138203daa3849ca28f265a3243
SSDEEP

12288:rYK4r6syCKHtudgQcEfCUkNNvshJGxnLeFnQ:rYK4RNKCcg1knvsh45LeFnQ

Score

10^/10

formbook a20e discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

a20e

Decoy

pushkarinidigital.com

e-shiryoku.com

sendmeblog.website

arniepalmer.com

tinnnitin.click

serummoctoc.online

chmoptk.xyz

kidskarpentry.com

wanglin123.com

onlinecannabis24dispensary.com

hkwx8.com

marcrosenkrans.com

bridginglegal.com

a2r2.cyou

app365e.com

semesta.xyz

encuentratucasacr.com

huiyusc58.com

carnivalofmiami.com

functionalbreeze.com

Signatures

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

Formbook payload 1 IoCs

rat

resource	yara_rule
behavioral31/memory/696-22-0x0000000000400000-0x000000000042F000-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
2568	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3012 set thread context of 696	3012	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe	34

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 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	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1424	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
696	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe
2568	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2568	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 2568	3012	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe	30
PID 3012 wrote to memory of 2568	3012	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe	30
PID 3012 wrote to memory of 2568	3012	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe	30
PID 3012 wrote to memory of 2568	3012	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe	30
PID 3012 wrote to memory of 1424	3012	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe	32
PID 3012 wrote to memory of 1424	3012	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe	32
PID 3012 wrote to memory of 1424	3012	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe	32
PID 3012 wrote to memory of 1424	3012	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe	32
PID 3012 wrote to memory of 696	3012	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe	34
PID 3012 wrote to memory of 696	3012	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe	34
PID 3012 wrote to memory of 696	3012	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe	34
PID 3012 wrote to memory of 696	3012	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe	34
PID 3012 wrote to memory of 696	3012	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe	34
PID 3012 wrote to memory of 696	3012	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe	34
PID 3012 wrote to memory of 696	3012	10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe	34

C:\Users\Admin\AppData\Local\Temp\10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe
"C:\Users\Admin\AppData\Local\Temp\10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3012
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\AcsxnldqTkS.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2568
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\AcsxnldqTkS" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4F96.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1424
- C:\Users\Admin\AppData\Local\Temp\10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe
  "C:\Users\Admin\AppData\Local\Temp\10758789ca875d9783a8988e0b0dbfd88f75a6ac0eb544b5b37241492223fdd1.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp4F96.tmp

Filesize
1KB

MD5
445aac28a6879957fb89eb61f3f304e6

SHA1
9b3b160152bcc032b6a404952b980ee8fb62e5ca

SHA256
a306b4b286845249d9a41fae7c93fccfcd838fea80d15c9dd489b6288b877059

SHA512
7aaac57ccb8a3b2bdd3245342361e3b58aff6727737580d7b75a23e87b6d527836f2055e6d0567f8386b7c33c7d76858d8d536c72983430017bcbf2b2030b108

Download Submit
memory/696-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/696-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/696-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/696-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3012-4-0x0000000000810000-0x0000000000828000-memory.dmp

Filesize
96KB

Download
memory/3012-6-0x0000000074770000-0x0000000074E5E000-memory.dmp

Filesize
6.9MB

Download
memory/3012-7-0x00000000041E0000-0x00000000041EC000-memory.dmp

Filesize
48KB

Download
memory/3012-8-0x0000000005990000-0x0000000005A1E000-memory.dmp

Filesize
568KB

Download
memory/3012-5-0x000000007477E000-0x000000007477F000-memory.dmp

Filesize
4KB

Download
memory/3012-16-0x0000000005CB0000-0x0000000005CE4000-memory.dmp

Filesize
208KB

Download
memory/3012-0-0x000000007477E000-0x000000007477F000-memory.dmp

Filesize
4KB

Download
memory/3012-3-0x0000000004C80000-0x0000000004D4C000-memory.dmp

Filesize
816KB

Download
memory/3012-2-0x0000000074770000-0x0000000074E5E000-memory.dmp

Filesize
6.9MB

Download
memory/3012-1-0x0000000000900000-0x00000000009A8000-memory.dmp

Filesize
672KB

Download
memory/3012-23-0x0000000074770000-0x0000000074E5E000-memory.dmp

Filesize
6.9MB

Download