formbook | 4672f0638e704fe1fcf9b905b3f87677f2158a24c6a924d6540101d181780b1e

Analysis

max time kernel
148s
max time network
140s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-12-2024 19:40

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

4672f0638e704fe1fcf9b905b3f87677f2158a24c6a924d6540101d181780b1e_Sigmanly.exe
Size

844KB
MD5

1a330ea2c1b274736cc9cd1ad4d58011
SHA1

d28bab9013ab8ae0549db9334744b29885c6f10b
SHA256

4672f0638e704fe1fcf9b905b3f87677f2158a24c6a924d6540101d181780b1e
SHA512

eb070e2e00b05e666d084bb89e1900d5caafbdfcdf97efbf21a1543b6bc9bd6015a5cc0d712bfa6372f69302f4add8063004883c2662679ac6b3f29abbb1b041
SSDEEP

12288:rLkcoxg7v3qnC11ErwIhh0F4qwUgUny5QL1fUdW7Kn7yjL+Hr:ffmMv6Ckr7Mny5QL9nKn7yjEr

Score

10^/10

formbook cl21 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

cl21

Decoy

0001.shop

earch-parttimejobs.today

are888.top

akanhaunthipped.shop

othing-heyu.xyz

cadvirsor.net

nclanalae.shop

lectric-cars-mexico.today

oxj-question.xyz

ersonalloanoffers.today

ersonalloans-fo54-fo37.click

verybody-ewfx.xyz

ercuremontauban.media

azilimdunyam.net

airs-clinicato.today

wiftsscend.click

ertainly-jbws.xyz

8xeng.app

damekadmitageable.cfd

ollapsedec.shop

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/4608-6-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4608-9-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1724-14-0x0000000000D50000-0x0000000000D7F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2756 set thread context of 4608	2756	4672f0638e704fe1fcf9b905b3f87677f2158a24c6a924d6540101d181780b1e_Sigmanly.exe	82
PID 4608 set thread context of 3456	4608	svchost.exe	56
PID 1724 set thread context of 3456	1724	cmstp.exe	56

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	cmstp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4672f0638e704fe1fcf9b905b3f87677f2158a24c6a924d6540101d181780b1e_Sigmanly.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

pid	Process
4608	svchost.exe
4608	svchost.exe
4608	svchost.exe
4608	svchost.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe
1724	cmstp.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2756	4672f0638e704fe1fcf9b905b3f87677f2158a24c6a924d6540101d181780b1e_Sigmanly.exe
4608	svchost.exe
4608	svchost.exe
4608	svchost.exe
1724	cmstp.exe
1724	cmstp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4608	svchost.exe
Token: SeDebugPrivilege	1724	cmstp.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2756	4672f0638e704fe1fcf9b905b3f87677f2158a24c6a924d6540101d181780b1e_Sigmanly.exe
2756	4672f0638e704fe1fcf9b905b3f87677f2158a24c6a924d6540101d181780b1e_Sigmanly.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
2756	4672f0638e704fe1fcf9b905b3f87677f2158a24c6a924d6540101d181780b1e_Sigmanly.exe
2756	4672f0638e704fe1fcf9b905b3f87677f2158a24c6a924d6540101d181780b1e_Sigmanly.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2756 wrote to memory of 4608	2756	4672f0638e704fe1fcf9b905b3f87677f2158a24c6a924d6540101d181780b1e_Sigmanly.exe	82
PID 2756 wrote to memory of 4608	2756	4672f0638e704fe1fcf9b905b3f87677f2158a24c6a924d6540101d181780b1e_Sigmanly.exe	82
PID 2756 wrote to memory of 4608	2756	4672f0638e704fe1fcf9b905b3f87677f2158a24c6a924d6540101d181780b1e_Sigmanly.exe	82
PID 2756 wrote to memory of 4608	2756	4672f0638e704fe1fcf9b905b3f87677f2158a24c6a924d6540101d181780b1e_Sigmanly.exe	82
PID 3456 wrote to memory of 1724	3456	Explorer.EXE	83
PID 3456 wrote to memory of 1724	3456	Explorer.EXE	83
PID 3456 wrote to memory of 1724	3456	Explorer.EXE	83
PID 1724 wrote to memory of 3464	1724	cmstp.exe	84
PID 1724 wrote to memory of 3464	1724	cmstp.exe	84
PID 1724 wrote to memory of 3464	1724	cmstp.exe	84

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3456
- C:\Users\Admin\AppData\Local\Temp\4672f0638e704fe1fcf9b905b3f87677f2158a24c6a924d6540101d181780b1e_Sigmanly.exe
  "C:\Users\Admin\AppData\Local\Temp\4672f0638e704fe1fcf9b905b3f87677f2158a24c6a924d6540101d181780b1e_Sigmanly.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:2756
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\4672f0638e704fe1fcf9b905b3f87677f2158a24c6a924d6540101d181780b1e_Sigmanly.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4608
- 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:1724
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\SysWOW64\svchost.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1724-13-0x0000000000150000-0x0000000000166000-memory.dmp

Filesize
88KB

Download
memory/1724-14-0x0000000000D50000-0x0000000000D7F000-memory.dmp

Filesize
188KB

Download
memory/1724-12-0x0000000000150000-0x0000000000166000-memory.dmp

Filesize
88KB

Download
memory/2756-5-0x00000000033A0000-0x00000000033A4000-memory.dmp

Filesize
16KB

Download
memory/3456-15-0x000000000A220000-0x000000000A3AD000-memory.dmp

Filesize
1.6MB

Download
memory/3456-11-0x000000000A220000-0x000000000A3AD000-memory.dmp

Filesize
1.6MB

Download
memory/3456-19-0x00000000081A0000-0x0000000008333000-memory.dmp

Filesize
1.6MB

Download
memory/3456-20-0x00000000081A0000-0x0000000008333000-memory.dmp

Filesize
1.6MB

Download
memory/3456-22-0x00000000081A0000-0x0000000008333000-memory.dmp

Filesize
1.6MB

Download
memory/4608-10-0x0000000000FC0000-0x0000000000FD4000-memory.dmp

Filesize
80KB

Download
memory/4608-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4608-7-0x0000000001800000-0x0000000001B4A000-memory.dmp

Filesize
3.3MB

Download
memory/4608-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download