formbook | b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d

General

Target

b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe
Size

620KB
MD5

035c35bf6a68763ba391504a7c6a4993
SHA1

2fb903b75098baf7d39fdc3db68cfb35e03100e8
SHA256

b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d
SHA512

4c6cbdcfed65bdcf1c37f93d02f6cf0ae839a3ac6016b594ff690a1d24615ba9abdeeb651734bb4b237c8cc9045e91c5ac25e1ed30b7762abe62a93a7170f049
SSDEEP

12288:j4lz4cX9/R3FcFCstoAsfqYFPV7PGuj9zcU/Nk8emr1y6m7H2ph1hRvjndCrkR:jcz4c7eFCseACJhzcU/Nkarub2fJvjdF

Score

10^/10

formbook ss24 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ss24

Decoy

agingwellhc.com

unikbetanggur.autos

eb2024yl.top

ja380.xyz

thehalcyon.studio

maudsoogrim.com

esteler10.click

mewtcp.xyz

www-zjbf1.club

kucinglucu.online

lunwencheck.com

65597.photos

erbxeu358h.top

startable.online

yousend.xyz

csharksg.com

centricoatings.com

ntruhslearn.xyz

achabakra.xyz

zuntool.com

Signatures

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

Formbook payload 1 IoCs

rat

resource	yara_rule
behavioral1/memory/2992-16-0x0000000000400000-0x000000000042F000-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
636	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2404 set thread context of 2992	2404	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe	35

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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2716	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2992	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe
636	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	636	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 636	2404	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe	31
PID 2404 wrote to memory of 636	2404	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe	31
PID 2404 wrote to memory of 636	2404	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe	31
PID 2404 wrote to memory of 636	2404	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe	31
PID 2404 wrote to memory of 2716	2404	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe	33
PID 2404 wrote to memory of 2716	2404	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe	33
PID 2404 wrote to memory of 2716	2404	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe	33
PID 2404 wrote to memory of 2716	2404	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe	33
PID 2404 wrote to memory of 2992	2404	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe	35
PID 2404 wrote to memory of 2992	2404	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe	35
PID 2404 wrote to memory of 2992	2404	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe	35
PID 2404 wrote to memory of 2992	2404	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe	35
PID 2404 wrote to memory of 2992	2404	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe	35
PID 2404 wrote to memory of 2992	2404	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe	35
PID 2404 wrote to memory of 2992	2404	b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe	35

C:\Users\Admin\AppData\Local\Temp\b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe
"C:\Users\Admin\AppData\Local\Temp\b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\DUsLon.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:636
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DUsLon" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB47.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2716
- C:\Users\Admin\AppData\Local\Temp\b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe
  "C:\Users\Admin\AppData\Local\Temp\b731e1e07da1ab601c2773e2124f60e482f30f81bf2d1d64c3363c5d1f4ec08d.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2992

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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\tmpB47.tmp

Filesize
1KB

MD5
6fe9123361f205d8c39229dfa54a826a

SHA1
6743b60664e9c4ba2a1d622acc0671d83fe2ca7b

SHA256
f3aec4d6f2fcac9429cfa1fb1ab5dc4f21838e8c55a861b5c7a38a953affb425

SHA512
6828764f35d82fbb34176fb672ef5eb54637ee168cb9c78b129b126175b5ab9df6f899db5d26286ee8a8af6f6ddff9ee72a99e9d7cba6504710a516d211c9adf

Download Submit
memory/2404-0-0x0000000074CCE000-0x0000000074CCF000-memory.dmp

Filesize
4KB

Download
memory/2404-1-0x0000000000140000-0x00000000001DE000-memory.dmp

Filesize
632KB

Download
memory/2404-2-0x0000000074CC0000-0x00000000753AE000-memory.dmp

Filesize
6.9MB

Download
memory/2404-3-0x0000000000540000-0x0000000000556000-memory.dmp

Filesize
88KB

Download
memory/2404-4-0x0000000000560000-0x000000000056E000-memory.dmp

Filesize
56KB

Download
memory/2404-5-0x00000000008F0000-0x0000000000966000-memory.dmp

Filesize
472KB

Download
memory/2404-19-0x0000000074CC0000-0x00000000753AE000-memory.dmp

Filesize
6.9MB

Download
memory/2992-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2992-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2992-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2992-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads