formbook | c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73

General

Target

c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe
Size

715KB
MD5

303c96d28de2023a3358f8a1c4dca692
SHA1

4fb8a0435be969803b11d4775d9026f692c64445
SHA256

c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73
SHA512

178e895c18b1afecfaa4bc10c259bd369485ed5ff03c96d0fdd36eb429e407bf57a0fb1b47268328cb9751982bdea69383b0f5be3af6a7c2738397b96d43b568
SSDEEP

12288:ZC25usx+XtRIO/3YtvYwFA8wL6Ab5buKjGhKyPV0VlzYqrh+GkVc:LxyIFvULLpNyKj6KKVqhYqla

Score

10^/10

formbook bs84 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bs84

Decoy

ehuatang.quest

mart-healthcare.solutions

arehouse-inventory-59593.bond

rumpjokes.net

oonlightshadow.store

odernoob.website

sdmedia.net

0k21l6z.xyz

kwovenart.shop

chvb.bid

06ks28.buzz

grexvc.online

unnycdn02.shop

ettingitgonejunk.net

lubmango.store

ustjump.xyz

ofiveuss.store

aahasti-inter5.rest

etclcg.business

ai365.xyz

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
behavioral1/memory/2616-19-0x0000000000400000-0x000000000042F000-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
2432	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1960 set thread context of 2616	1960	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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
2176	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2616	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe
2432	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2432	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 2432	1960	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe	30
PID 1960 wrote to memory of 2432	1960	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe	30
PID 1960 wrote to memory of 2432	1960	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe	30
PID 1960 wrote to memory of 2432	1960	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe	30
PID 1960 wrote to memory of 2176	1960	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe	32
PID 1960 wrote to memory of 2176	1960	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe	32
PID 1960 wrote to memory of 2176	1960	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe	32
PID 1960 wrote to memory of 2176	1960	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe	32
PID 1960 wrote to memory of 2616	1960	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe	34
PID 1960 wrote to memory of 2616	1960	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe	34
PID 1960 wrote to memory of 2616	1960	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe	34
PID 1960 wrote to memory of 2616	1960	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe	34
PID 1960 wrote to memory of 2616	1960	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe	34
PID 1960 wrote to memory of 2616	1960	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe	34
PID 1960 wrote to memory of 2616	1960	c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe	34

C:\Users\Admin\AppData\Local\Temp\c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe
"C:\Users\Admin\AppData\Local\Temp\c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ODwExtAZdSpo.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2432
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ODwExtAZdSpo" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAB5C.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2176
- C:\Users\Admin\AppData\Local\Temp\c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe
  "C:\Users\Admin\AppData\Local\Temp\c1858ea28a880a9d789497986b541c29f79cb2d6de8aea568f09b309a7819c73.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpAB5C.tmp

Filesize
1KB

MD5
35007a00717db87e887762356418c60a

SHA1
35417b5c97e8ea0da7690fd0990f05b5e89066ac

SHA256
b41cc1c3030933f19f0131fc4733899b3876aacef894968dcbb04217b0316640

SHA512
fe1f261fc6ba578921abcb3ba64b11c2f5b3da7af8cb194060df8237a9f718981d1a1d52c40d7d788f22fba456abf07721f2efa3ca07add37c1a3f97ea0d2318

Download Submit
memory/1960-6-0x0000000005020000-0x0000000005098000-memory.dmp

Filesize
480KB

Download
memory/1960-2-0x0000000074750000-0x0000000074E3E000-memory.dmp

Filesize
6.9MB

Download
memory/1960-3-0x0000000000380000-0x0000000000398000-memory.dmp

Filesize
96KB

Download
memory/1960-4-0x000000007475E000-0x000000007475F000-memory.dmp

Filesize
4KB

Download
memory/1960-5-0x0000000074750000-0x0000000074E3E000-memory.dmp

Filesize
6.9MB

Download
memory/1960-0-0x000000007475E000-0x000000007475F000-memory.dmp

Filesize
4KB

Download
memory/1960-1-0x0000000000D30000-0x0000000000DE8000-memory.dmp

Filesize
736KB

Download
memory/1960-20-0x0000000074750000-0x0000000074E3E000-memory.dmp

Filesize
6.9MB

Download
memory/2616-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2616-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2616-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2616-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads