formbook | 36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf

General

Target

36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe
Size

743KB
MD5

df300e93be84410e629996a8050e47b2
SHA1

1ace59620fa5e6b7717a04ad28620e6a61191c80
SHA256

36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf
SHA512

435302f901c1068288bf80e5726f3f9d0cbb4bfc6a3b489c7e3260698aa0b3e1707a203d3998b99ea183a21f3a1736eaa422fee358d88eb795647d665fa7b705
SSDEEP

12288:w38f2uE1zDf5n7Dm1C8T7bl9JrUKrlR+v+Yyf39fiQyHWsUuAPM5Uf8f2:w3u2uO3B4Ck59ReyfN5kWtuAa4u2

Score

10^/10

formbook k49s discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

k49s

Decoy

ufberyrubiest.shop

tpanekatotosite.top

esona805158762.xyz

earing-tests-15487.bond

rediksitiraitoto.xyz

tore-playstore.online

mpresarialpx38.online

ufxusa.net

reativedesigns.lat

leaning-services-47614.bond

959725nptklnq923.top

treziop.xyz

eubel-bestseller.online

uynewcars.xyz

all-panels-74750.bond

erviceninjas.vip

arectoroffice.xyz

oviesgpt.app

ractors-22059.bond

rakenfitness.info

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/2924-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2924-18-0x0000000000820000-0x0000000000B23000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3004	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2112 set thread context of 2924	2112	36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe	32

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 2 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	36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2924	36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe
3004	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3004	powershell.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 3004	2112	36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe	31
PID 2112 wrote to memory of 3004	2112	36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe	31
PID 2112 wrote to memory of 3004	2112	36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe	31
PID 2112 wrote to memory of 3004	2112	36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe	31
PID 2112 wrote to memory of 2924	2112	36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe	32
PID 2112 wrote to memory of 2924	2112	36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe	32
PID 2112 wrote to memory of 2924	2112	36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe	32
PID 2112 wrote to memory of 2924	2112	36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe	32
PID 2112 wrote to memory of 2924	2112	36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe	32
PID 2112 wrote to memory of 2924	2112	36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe	32
PID 2112 wrote to memory of 2924	2112	36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe	32

C:\Users\Admin\AppData\Local\Temp\36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe
"C:\Users\Admin\AppData\Local\Temp\36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3004
- C:\Users\Admin\AppData\Local\Temp\36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe
  "C:\Users\Admin\AppData\Local\Temp\36ac663aee997b4b8da3bd498abcbdb91ca180f7afe402ce8ab166099c098cbf_Sigmanly.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2924

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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

Replay Monitor

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Downloads

memory/2112-6-0x00000000002C0000-0x000000000033A000-memory.dmp

Filesize
488KB

Download
memory/2112-0-0x000000007485E000-0x000000007485F000-memory.dmp

Filesize
4KB

Download
memory/2112-2-0x0000000074850000-0x0000000074F3E000-memory.dmp

Filesize
6.9MB

Download
memory/2112-3-0x0000000000450000-0x0000000000476000-memory.dmp

Filesize
152KB

Download
memory/2112-4-0x000000007485E000-0x000000007485F000-memory.dmp

Filesize
4KB

Download
memory/2112-5-0x0000000074850000-0x0000000074F3E000-memory.dmp

Filesize
6.9MB

Download
memory/2112-1-0x0000000000B40000-0x0000000000C00000-memory.dmp

Filesize
768KB

Download
memory/2112-14-0x0000000074850000-0x0000000074F3E000-memory.dmp

Filesize
6.9MB

Download
memory/2924-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2924-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2924-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2924-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2924-15-0x0000000000820000-0x0000000000B23000-memory.dmp

Filesize
3.0MB

Download
memory/2924-18-0x0000000000820000-0x0000000000B23000-memory.dmp

Filesize
3.0MB

Download

Analysis

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