formbook | e7392c3db5bcda2a21a94614bdc05fb13f7ebd4d141ce80e82f87f7455bf79cf

General

Target

8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe
Size

771KB
MD5

a6718dd552a34001f40ced365b16d1ee
SHA1

f40747dd6f9bd62751bc2b9734dd5bbe8e92723a
SHA256

8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b
SHA512

fbca66394755bf974e7abe6f215048e7f19ae2b9630036e0e04fc2e420332f2f40f84de4dfb78b65c41f9855dd3963513efad1395a5cfaf73616a0dfeff9ddf5
SSDEEP

12288:RblmTdKCcfCQtVKr2hXFn+8WnTN77B2qjsH0y:xlmAdE291+86d

Score

10^/10

formbook o17i discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

o17i

Decoy

chocolatebarreview.com

fetch-a-trabajos-canada.info

expresspestcontrol.net

tractionx.co.uk

vitalassetsecurity.com

lahtawine.ru

firedamagereports.com

bentzenphotography.com

digitalworkforces.com

divnoe.online

efefbig.buzz

melhardy.co.uk

igorsolutions.com

developmentszhuiservice.com

fookspace.com

kredaroo.com

4zpm.xyz

kycecat.cfd

singingriverhomeimprovement.com

bils.store

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

Processes:

resource	yara_rule
behavioral1/memory/1876-21-0x0000000000400000-0x000000000042F000-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

Processes:

powershell.exe

pid	Process
2668	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe

description	pid	Process	procid_target
PID 2688 set thread context of 1876	2688	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.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

Processes:

8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exepowershell.exeschtasks.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.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

Processes:

schtasks.exe

pid	Process
3040	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exepowershell.exe

pid	Process
1876	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe
2668	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description	pid	Process
Token: SeDebugPrivilege	2668	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe

description	pid	Process	procid_target
PID 2688 wrote to memory of 2668	2688	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe	30
PID 2688 wrote to memory of 2668	2688	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe	30
PID 2688 wrote to memory of 2668	2688	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe	30
PID 2688 wrote to memory of 2668	2688	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe	30
PID 2688 wrote to memory of 3040	2688	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe	32
PID 2688 wrote to memory of 3040	2688	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe	32
PID 2688 wrote to memory of 3040	2688	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe	32
PID 2688 wrote to memory of 3040	2688	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe	32
PID 2688 wrote to memory of 1876	2688	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe	34
PID 2688 wrote to memory of 1876	2688	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe	34
PID 2688 wrote to memory of 1876	2688	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe	34
PID 2688 wrote to memory of 1876	2688	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe	34
PID 2688 wrote to memory of 1876	2688	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe	34
PID 2688 wrote to memory of 1876	2688	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe	34
PID 2688 wrote to memory of 1876	2688	8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe	34

C:\Users\Admin\AppData\Local\Temp\8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe
"C:\Users\Admin\AppData\Local\Temp\8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2688
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\WBJIjC.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2668
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WBJIjC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9B75.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3040
- C:\Users\Admin\AppData\Local\Temp\8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe
  "C:\Users\Admin\AppData\Local\Temp\8f61fd5ce3c2fa9186c75e703ce9e38d66538b9fe2214dd78d2df4c2c7cbda1b.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1876

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\tmp9B75.tmp

Filesize
1KB

MD5
d77a5d2a572e8c5cda9e0f4526c7c795

SHA1
e97ad824315b66bdafb4d262ca51d37d9567cdfb

SHA256
cbe7328635e24b16472f6e8c122a9356e70e6614128983622fe0b92cb7e26964

SHA512
0e7a93136ea2af541bbc106c971f5704d534c06c5d0a06918c76bfe991a0fc0e1303796446c6ce67fdbeb44c1c8a9926b59d7abf5f6509a5adcbd44f66714237

Download Submit
memory/1876-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1876-20-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1876-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1876-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2688-6-0x0000000000950000-0x000000000095C000-memory.dmp

Filesize
48KB

Download
memory/2688-0-0x00000000744CE000-0x00000000744CF000-memory.dmp

Filesize
4KB

Download
memory/2688-7-0x0000000000ED0000-0x0000000000F40000-memory.dmp

Filesize
448KB

Download
memory/2688-5-0x00000000744C0000-0x0000000074BAE000-memory.dmp

Filesize
6.9MB

Download
memory/2688-13-0x0000000005200000-0x0000000005238000-memory.dmp

Filesize
224KB

Download
memory/2688-4-0x00000000744CE000-0x00000000744CF000-memory.dmp

Filesize
4KB

Download
memory/2688-3-0x0000000000500000-0x0000000000512000-memory.dmp

Filesize
72KB

Download
memory/2688-2-0x00000000744C0000-0x0000000074BAE000-memory.dmp

Filesize
6.9MB

Download
memory/2688-1-0x0000000000F40000-0x0000000001008000-memory.dmp

Filesize
800KB

Download
memory/2688-22-0x00000000744C0000-0x0000000074BAE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads