formbook | f52385cdf40462b777d24c08f82828b1d28fdfce3e07873c918266686a3914f9

General

Target

maxx[1].exe
Size

311KB
MD5

5336c524e14753aeacf55d47d243a5c7
SHA1

57dd79737e08b2669fec5926fb6d283e36fccee3
SHA256

58de41e1c48a304c1f7f289fe5c8976d82b8968aae89497adf7c60cda25deaaf
SHA512

9237b2e210b4c9c2a61baec0306d826f0b93fe7f52734ca0fe59a87aa23a453466320ecc49b728ce87bc26d1884e3a7e6b8d0c683497bc10891a5fb88dd5feac
SSDEEP

6144:mbE/HUbSRS5yHZIHRAFP9+yETiVl4e9hwuIfLNEWNLRlRf:mb/iXsWt9+yFV9auOVfj

Score

10^/10

formbook dyh6 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

dyh6

Decoy

ximmgepn.xyz

bonitacandle.com

thesneakerhubofficial.com

miabags.online

maboxhistoire.com

viral22.com

gracebruno.xyz

safetycare.xyz

aerith.store

mountaingirlbbq.com

bhbuildertest-ecom.space

klhcn.com

guizhouhl.top

noreply-engagementboost.com

derdmlaucaty.store

viffetrade.com

iesyttsn.xyz

msumon.com

autoforos.com

carlosmorgan.com

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral1/memory/2320-9-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2320-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2320-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1808-22-0x0000000000090000-0x00000000000BF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2744	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
2016	maxx[1].exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2016 set thread context of 2320	2016	maxx[1].exe	31
PID 2320 set thread context of 1212	2320	maxx[1].exe	21
PID 2320 set thread context of 1212	2320	maxx[1].exe	21
PID 1808 set thread context of 1212	1808	cmstp.exe	21

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	maxx[1].exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmstp.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2320	maxx[1].exe
2320	maxx[1].exe
2320	maxx[1].exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe
1808	cmstp.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2320	maxx[1].exe
2320	maxx[1].exe
2320	maxx[1].exe
2320	maxx[1].exe
1808	cmstp.exe
1808	cmstp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2320	maxx[1].exe
Token: SeDebugPrivilege	1808	cmstp.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 2320	2016	maxx[1].exe	31
PID 2016 wrote to memory of 2320	2016	maxx[1].exe	31
PID 2016 wrote to memory of 2320	2016	maxx[1].exe	31
PID 2016 wrote to memory of 2320	2016	maxx[1].exe	31
PID 2016 wrote to memory of 2320	2016	maxx[1].exe	31
PID 2016 wrote to memory of 2320	2016	maxx[1].exe	31
PID 2016 wrote to memory of 2320	2016	maxx[1].exe	31
PID 1212 wrote to memory of 1808	1212	Explorer.EXE	32
PID 1212 wrote to memory of 1808	1212	Explorer.EXE	32
PID 1212 wrote to memory of 1808	1212	Explorer.EXE	32
PID 1212 wrote to memory of 1808	1212	Explorer.EXE	32
PID 1212 wrote to memory of 1808	1212	Explorer.EXE	32
PID 1212 wrote to memory of 1808	1212	Explorer.EXE	32
PID 1212 wrote to memory of 1808	1212	Explorer.EXE	32
PID 1808 wrote to memory of 2744	1808	cmstp.exe	33
PID 1808 wrote to memory of 2744	1808	cmstp.exe	33
PID 1808 wrote to memory of 2744	1808	cmstp.exe	33
PID 1808 wrote to memory of 2744	1808	cmstp.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1212
- C:\Users\Admin\AppData\Local\Temp\maxx[1].exe
  "C:\Users\Admin\AppData\Local\Temp\maxx[1].exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2016
- - C:\Users\Admin\AppData\Local\Temp\maxx[1].exe
    "C:\Users\Admin\AppData\Local\Temp\maxx[1].exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2320
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1808
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\maxx[1].exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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\nsjDB24.tmp\iglq.dll

Filesize
121KB

MD5
07ed356bb53669a56a3d6d04093d1b49

SHA1
6c480a1af955ee2633020a0eb2807004fe336f10

SHA256
c205c4b93e7dff6cf6e2e301b9bc35668448db47913cef5d30ec78cdeeb16aaf

SHA512
1fbdeb195ca1833b5a0edcb62e535dc4deb61b641638dcd78951d4bb476f11780d91834aad3eb5f3f570ed65b599a372f0688226a805fabdb5785d5b9f32f4a9

Download Submit
memory/1212-12-0x0000000004F80000-0x00000000050E6000-memory.dmp

Filesize
1.4MB

Download
memory/1212-15-0x0000000004F80000-0x00000000050E6000-memory.dmp

Filesize
1.4MB

Download
memory/1212-16-0x0000000006620000-0x0000000006757000-memory.dmp

Filesize
1.2MB

Download
memory/1212-23-0x0000000006620000-0x0000000006757000-memory.dmp

Filesize
1.2MB

Download
memory/1808-19-0x0000000000F00000-0x0000000000F18000-memory.dmp

Filesize
96KB

Download
memory/1808-21-0x0000000000F00000-0x0000000000F18000-memory.dmp

Filesize
96KB

Download
memory/1808-22-0x0000000000090000-0x00000000000BF000-memory.dmp

Filesize
188KB

Download
memory/2016-7-0x0000000074CAC000-0x0000000074CAE000-memory.dmp

Filesize
8KB

Download
memory/2320-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2320-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2320-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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