formbook | 136006b297c0cf2224c6029731d470efa5765cf12071525b4757c371e09e1ddb

General

Target

620178.exe
Size

555KB
MD5

c10d8e2ba03e8e330199e67e61b24196
SHA1

74514a4dbc39b836140ad3b38c6ebd1fde4cb8b6
SHA256

6fea45df3c9acc6954753f6f3b2ea7a53707655fe75d828d5dcbf05342c99411
SHA512

1cf2b9d6a8b5b39d7815ba7e6e8e02cd88a826f6b861bd22bd1916b32bc8de93eadbf1ce793971cd344c6ee935b33d7fc2dccfaa228dc5b6f162086d9ea69c87
SSDEEP

12288:b31hW+URZrVRKCUFg+ew67N+brE3IoUFf00x8:LORtVRKLuVSbrZjx

Score

10^/10

formbook bg11 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bg11

Decoy

cc-creative.art

dinheiro.pro

rbkny.com

trifectatkd.com

cg-no.net

dificomd.net

smartdzedu.com

kembleinteriors.site

gchuoor.com

legion-models.com

livechatassistant.xyz

martialartsdiscovery.com

ozogfh.com

novelreader.xyz

soularganoil.com

jordanscottpottery.space

fitlineaustria.com

chuvop.xyz

skillgas.com

127x36.com

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral2/memory/3124-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3124-18-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2484-23-0x0000000000D30000-0x0000000000D5F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1964 set thread context of 3124	1964	620178.exe	91
PID 3124 set thread context of 3500	3124	620178.exe	56
PID 2484 set thread context of 3500	2484	chkdsk.exe	56

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	620178.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 44 IoCs

pid	Process
3124	620178.exe
3124	620178.exe
3124	620178.exe
3124	620178.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe
2484	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
3124	620178.exe
3124	620178.exe
3124	620178.exe
2484	chkdsk.exe
2484	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3124	620178.exe
Token: SeDebugPrivilege	2484	chkdsk.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1964 wrote to memory of 3124	1964	620178.exe	91
PID 1964 wrote to memory of 3124	1964	620178.exe	91
PID 1964 wrote to memory of 3124	1964	620178.exe	91
PID 1964 wrote to memory of 3124	1964	620178.exe	91
PID 1964 wrote to memory of 3124	1964	620178.exe	91
PID 1964 wrote to memory of 3124	1964	620178.exe	91
PID 3500 wrote to memory of 2484	3500	Explorer.EXE	92
PID 3500 wrote to memory of 2484	3500	Explorer.EXE	92
PID 3500 wrote to memory of 2484	3500	Explorer.EXE	92
PID 2484 wrote to memory of 3224	2484	chkdsk.exe	93
PID 2484 wrote to memory of 3224	2484	chkdsk.exe	93
PID 2484 wrote to memory of 3224	2484	chkdsk.exe	93

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3500
- C:\Users\Admin\AppData\Local\Temp\620178.exe
  "C:\Users\Admin\AppData\Local\Temp\620178.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1964
- - C:\Users\Admin\AppData\Local\Temp\620178.exe
    "C:\Users\Admin\AppData\Local\Temp\620178.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3124
- 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:2484
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\620178.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3224

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/1964-12-0x00000000073B0000-0x00000000073E4000-memory.dmp

Filesize
208KB

Download
memory/1964-2-0x0000000005CD0000-0x0000000006274000-memory.dmp

Filesize
5.6MB

Download
memory/1964-0-0x000000007497E000-0x000000007497F000-memory.dmp

Filesize
4KB

Download
memory/1964-15-0x0000000074970000-0x0000000075120000-memory.dmp

Filesize
7.7MB

Download
memory/1964-4-0x00000000056B0000-0x00000000056BA000-memory.dmp

Filesize
40KB

Download
memory/1964-5-0x0000000074970000-0x0000000075120000-memory.dmp

Filesize
7.7MB

Download
memory/1964-6-0x0000000006DF0000-0x0000000006E8C000-memory.dmp

Filesize
624KB

Download
memory/1964-7-0x0000000005940000-0x000000000595E000-memory.dmp

Filesize
120KB

Download
memory/1964-8-0x000000007497E000-0x000000007497F000-memory.dmp

Filesize
4KB

Download
memory/1964-9-0x0000000074970000-0x0000000075120000-memory.dmp

Filesize
7.7MB

Download
memory/1964-10-0x0000000005B10000-0x0000000005B1A000-memory.dmp

Filesize
40KB

Download
memory/1964-11-0x0000000007300000-0x000000000736C000-memory.dmp

Filesize
432KB

Download
memory/1964-3-0x0000000005720000-0x00000000057B2000-memory.dmp

Filesize
584KB

Download
memory/1964-1-0x0000000000D80000-0x0000000000E12000-memory.dmp

Filesize
584KB

Download
memory/2484-21-0x00000000009A0000-0x00000000009AA000-memory.dmp

Filesize
40KB

Download
memory/2484-22-0x00000000009A0000-0x00000000009AA000-memory.dmp

Filesize
40KB

Download
memory/2484-23-0x0000000000D30000-0x0000000000D5F000-memory.dmp

Filesize
188KB

Download
memory/3124-16-0x0000000001160000-0x00000000014AA000-memory.dmp

Filesize
3.3MB

Download
memory/3124-19-0x0000000001050000-0x0000000001064000-memory.dmp

Filesize
80KB

Download
memory/3124-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3124-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3500-31-0x0000000008A50000-0x0000000008B57000-memory.dmp

Filesize
1.0MB

Download
memory/3500-20-0x0000000007C60000-0x0000000007D29000-memory.dmp

Filesize
804KB

Download
memory/3500-24-0x0000000007C60000-0x0000000007D29000-memory.dmp

Filesize
804KB

Download
memory/3500-28-0x0000000008A50000-0x0000000008B57000-memory.dmp

Filesize
1.0MB

Download
memory/3500-29-0x0000000008A50000-0x0000000008B57000-memory.dmp

Filesize
1.0MB

Download

Analysis

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