formbook | b8d074da8531b10cee3844431f8502da1a3932586fb6fa82da7a38da44409026

Analysis

max time kernel
135s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
30-08-2024 16:52

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General

Target

cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe
Size

704KB
MD5

cb40c157e93e8013af5447c28fd3b942
SHA1

16b0df235b3954c6e6b96f7aecc252f22bc021db
SHA256

b8d074da8531b10cee3844431f8502da1a3932586fb6fa82da7a38da44409026
SHA512

d4bf092e3c911aeed4f88d2327ee9300fb3cc7501ab85e47596fb620dd40667265ca05b29f2fba3eac6ba15b0c19d66b185ab214eb7ef7a68349bb4d5fa3303d
SSDEEP

12288:zIwR9YVsNiXfvHFhixCUlskyCeKfAA1T4uJjx7aEiC0:zIIYVyyvHjisayNZASwVaEt

Score

10^/10

formbook l5 discovery rat spyware stealer trojan upx

Malware Config

Extracted

Family

formbook

Version

3.8

Campaign

Decoy

riverchaseapts.net

0430pe.com

nbgift.net

ehkhwn.win

immatthall.com

fkslc.info

breakthroughmediadon.com

eatorganic.life

okcitytowing.com

egaodomain.com

krenbc.com

lavi.ltd

sport-score.com

romskicentar.com

junkyard.design

xn--55q83b758aihq.com

phonerepairlocal.com

5656868.com

1s7onework.men

elizabethreidinteriordesign.com

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/4052-6-0x0000000000400000-0x000000000042A000-memory.dmp	formbook

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4532-0-0x0000000000400000-0x0000000000586000-memory.dmp	upx
behavioral2/memory/4532-2-0x0000000000400000-0x0000000000586000-memory.dmp	upx
behavioral2/memory/4532-9-0x0000000000400000-0x0000000000586000-memory.dmp	upx

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4532 set thread context of 4052	4532	cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe	103

System Location Discovery: System Language Discovery 1 TTPs 1 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	cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4052	cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe
4052	cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe
4052	cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4532 wrote to memory of 4052	4532	cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe	103
PID 4532 wrote to memory of 4052	4532	cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe	103
PID 4532 wrote to memory of 4052	4532	cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe	103
PID 4532 wrote to memory of 4052	4532	cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe	103
PID 4532 wrote to memory of 4052	4532	cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe	103
PID 4532 wrote to memory of 4052	4532	cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe	103

C:\Users\Admin\AppData\Local\Temp\cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4532
- C:\Users\Admin\AppData\Local\Temp\cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\cb40c157e93e8013af5447c28fd3b942_JaffaCakes118.exe
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4052

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3884,i,7447299413640964517,4240724842020506306,262144 --variations-seed-version --mojo-platform-channel-handle=4148 /prefetch:8
1⤵
PID:1056

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4052-6-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/4052-10-0x0000000000AF0000-0x0000000000E3A000-memory.dmp

Filesize
3.3MB

Download
memory/4532-0-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download
memory/4532-1-0x0000000002330000-0x0000000002331000-memory.dmp

Filesize
4KB

Download
memory/4532-2-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download
memory/4532-4-0x0000000002330000-0x0000000002331000-memory.dmp

Filesize
4KB

Download
memory/4532-9-0x0000000000400000-0x0000000000586000-memory.dmp

Filesize
1.5MB

Download