formbook | 188fc0e1a5a4e4106a03a3967d52f22caedfc1354a42eb235ed6d9bb24abef8e

General

Target

Payment update.exe
Size

741KB
MD5

bf34896fa20667412fdfc4f2da5b2b2d
SHA1

7af4a5bbb6e45110543cff78a221075cea4de721
SHA256

5810c640bb4219ca39bc8a0c8b50f8447e5e47784e75dfdacdce65d5d2c31e47
SHA512

adb61d4380e54e03d3aa80ec099fb4a5ba7e78e0246adf1e548f83e8e7adff03067508b637798c8d076960059444adbc981f02ae2ec6e47838be43f83e4c028e
SSDEEP

12288:mz2WFHmst7SPQnpAVH2rXOqoZ/wNQm0G+oB7hXC/2aEMnJWYTl:glHT7SPQuFT/80GVBlX/MnJWYT

Score

10^/10

formbook bmmo discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bmmo

Decoy

nosethecat.com

sanfranciscoclothes.com

laonzeprime.com

ecscart.com

pruearomablends.com

birdhousecustoms.com

giftforchange.com

madribr.com

thepickupmerchant.xyz

lidajian.com

gsxsell.com

cancerandwt1.com

paradisereport.com

wpsexcel.com

baranbey.com

kp3d.net

healous.com

eagerlygrowing.com

faultydev.com

virtualcarenearme.com

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2628-13-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/2628-18-0x0000000000400000-0x000000000042E000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2636	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1848 set thread context of 2628	1848	Payment update.exe	31
PID 2628 set thread context of 1224	2628	Payment update.exe	21
PID 2640 set thread context of 1224	2640	chkdsk.exe	21

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	Payment update.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
2628	Payment update.exe
2628	Payment update.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe
2640	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2628	Payment update.exe
2628	Payment update.exe
2628	Payment update.exe
2640	chkdsk.exe
2640	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2628	Payment update.exe
Token: SeDebugPrivilege	2640	chkdsk.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1848 wrote to memory of 2628	1848	Payment update.exe	31
PID 1848 wrote to memory of 2628	1848	Payment update.exe	31
PID 1848 wrote to memory of 2628	1848	Payment update.exe	31
PID 1848 wrote to memory of 2628	1848	Payment update.exe	31
PID 1848 wrote to memory of 2628	1848	Payment update.exe	31
PID 1848 wrote to memory of 2628	1848	Payment update.exe	31
PID 1848 wrote to memory of 2628	1848	Payment update.exe	31
PID 1848 wrote to memory of 2628	1848	Payment update.exe	31
PID 1848 wrote to memory of 2628	1848	Payment update.exe	31
PID 1848 wrote to memory of 2628	1848	Payment update.exe	31
PID 1224 wrote to memory of 2640	1224	Explorer.EXE	32
PID 1224 wrote to memory of 2640	1224	Explorer.EXE	32
PID 1224 wrote to memory of 2640	1224	Explorer.EXE	32
PID 1224 wrote to memory of 2640	1224	Explorer.EXE	32
PID 2640 wrote to memory of 2636	2640	chkdsk.exe	33
PID 2640 wrote to memory of 2636	2640	chkdsk.exe	33
PID 2640 wrote to memory of 2636	2640	chkdsk.exe	33
PID 2640 wrote to memory of 2636	2640	chkdsk.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1224
- C:\Users\Admin\AppData\Local\Temp\Payment update.exe
  "C:\Users\Admin\AppData\Local\Temp\Payment update.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1848
- - C:\Users\Admin\AppData\Local\Temp\Payment update.exe
    "C:\Users\Admin\AppData\Local\Temp\Payment update.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2628
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2640
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Payment update.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1224-23-0x00000000068C0000-0x0000000006A52000-memory.dmp

Filesize
1.6MB

Download
memory/1224-17-0x0000000000360000-0x0000000000460000-memory.dmp

Filesize
1024KB

Download
memory/1224-20-0x00000000068C0000-0x0000000006A52000-memory.dmp

Filesize
1.6MB

Download
memory/1848-14-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/1848-1-0x00000000001E0000-0x00000000002A0000-memory.dmp

Filesize
768KB

Download
memory/1848-2-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/1848-3-0x0000000000320000-0x0000000000336000-memory.dmp

Filesize
88KB

Download
memory/1848-4-0x000000007408E000-0x000000007408F000-memory.dmp

Filesize
4KB

Download
memory/1848-5-0x0000000074080000-0x000000007476E000-memory.dmp

Filesize
6.9MB

Download
memory/1848-6-0x0000000007D00000-0x0000000007D90000-memory.dmp

Filesize
576KB

Download
memory/1848-7-0x00000000050E0000-0x0000000005138000-memory.dmp

Filesize
352KB

Download
memory/1848-0-0x000000007408E000-0x000000007408F000-memory.dmp

Filesize
4KB

Download
memory/2628-13-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2628-19-0x00000000002A0000-0x00000000002B4000-memory.dmp

Filesize
80KB

Download
memory/2628-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2628-18-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2628-9-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2628-15-0x0000000000990000-0x0000000000C93000-memory.dmp

Filesize
3.0MB

Download
memory/2628-8-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2640-21-0x00000000006B0000-0x00000000006B7000-memory.dmp

Filesize
28KB

Download
memory/2640-22-0x00000000006B0000-0x00000000006B7000-memory.dmp

Filesize
28KB

Download

Analysis

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