formbook | a45cec5c48aae2040669ece459ae34de87251080934add3da91e9ab72ea2abe7

General

Target

c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe
Size

555KB
MD5

c57658ef781e0f31e6539263bb87c7fc
SHA1

4a8902bdbfe4d490aac56b9962caec5598e5604c
SHA256

a45cec5c48aae2040669ece459ae34de87251080934add3da91e9ab72ea2abe7
SHA512

637f1ef12dc4e3d86f8d5dec18c1cbe88c08db1a150de090e9f1135643136e0abd73f75b0b1c14c6cd144280b736cb25cbe28be13747ccc01e5420fed4a56922
SSDEEP

12288:B3tTTCkyO2KnJVr7tjoH5QPpCuzYGWrrUN8ywGIgyfOZadEVFMWM:B9b1r785e1zW8N8ywLfK7F

Score

10^/10

formbook bft discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bft

Decoy

edenicities.com

buntingfordhomeservices.com

nuanceproducoes.com

divasinspire.com

capiturn.com

zbjsn.com

thegioicaytrongnha.com

featherventure.com

onbrandtrading.com

sanguoban.com

doorman.pro

ourhomie.net

iwassickonholiday.com

mrcskin.com

reallycoolmask.com

tkrbeautyinstitut.com

keytomiami.com

sesliduybeni.com

asherwebber.com

starkweatherwindows.net

Signatures

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

Formbook payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/4416-11-0x0000000000400000-0x000000000042E000-memory.dmp	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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4188 set thread context of 4416	4188	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe	101

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 2 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	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.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
4036	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
4188	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe
4188	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe
4188	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe
4416	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe
4416	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4188	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4188 wrote to memory of 4036	4188	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe	98
PID 4188 wrote to memory of 4036	4188	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe	98
PID 4188 wrote to memory of 4036	4188	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe	98
PID 4188 wrote to memory of 2484	4188	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe	100
PID 4188 wrote to memory of 2484	4188	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe	100
PID 4188 wrote to memory of 2484	4188	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe	100
PID 4188 wrote to memory of 4416	4188	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe	101
PID 4188 wrote to memory of 4416	4188	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe	101
PID 4188 wrote to memory of 4416	4188	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe	101
PID 4188 wrote to memory of 4416	4188	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe	101
PID 4188 wrote to memory of 4416	4188	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe	101
PID 4188 wrote to memory of 4416	4188	c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe	101

C:\Users\Admin\AppData\Local\Temp\c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe"
1⤵
- 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:4188
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\bKeWepQJXUfB" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC55E.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4036
- C:\Users\Admin\AppData\Local\Temp\c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe"
  2⤵
  PID:2484
- C:\Users\Admin\AppData\Local\Temp\c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\c57658ef781e0f31e6539263bb87c7fc_JaffaCakes118.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4416

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

Query Registry

1

T1012

System Information Discovery

2

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\tmpC55E.tmp

Filesize
1KB

MD5
b390deccf6b4b184c2f09cbbf2addab9

SHA1
102d29430d24f300b86d2bb6ab1602bb3aa358bd

SHA256
7a8e209330ba1a07003ce1814068432487df96d85302d8ffab078cc66a6f7d33

SHA512
b54add85abbe528e6485f4cfa5f8bcd85fde97727f9f12c542461f0d48d67560ea180979c67aaa14eb17f3ab8eb96986360fbeb55a5cbb5bc6cfa2b98af52728

Download Submit
memory/4188-0-0x0000000074CD2000-0x0000000074CD3000-memory.dmp

Filesize
4KB

Download
memory/4188-1-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/4188-2-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/4188-3-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/4188-4-0x0000000074CD2000-0x0000000074CD3000-memory.dmp

Filesize
4KB

Download
memory/4188-5-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/4188-13-0x0000000074CD0000-0x0000000075281000-memory.dmp

Filesize
5.7MB

Download
memory/4416-11-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4416-14-0x00000000018F0000-0x0000000001C3A000-memory.dmp

Filesize
3.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads