formbook | c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10

General

Target

c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exe
Size

1.2MB
MD5

ddae367e828d169834f7261f3cba74d2
SHA1

0a7f61bc670a38cce473053b93c3796649f3ce57
SHA256

c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10
SHA512

5ac0dfd3e14198550feed9dcc7e3637f2e1de7d8ad8558f280b8cc9350e2e092eef19b0ddf6f5090c78bb33dd4b0740def662ebb742591ac7b74a46220a3fac4
SSDEEP

24576:m3hJAVEoHlqRTPEZjimfAygETqHnyCPTONsM:mRJJNRTCbfAygETqHnyCP6NsM

Score

10^/10

formbook ar73 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

ar73

Decoy

classgorilla.com

b6817.com

1wwuwa.top

dgslimited.africa

deepwaterships.com

hkshshoptw.shop

hurricanevalleyatvjamboree.com

ckpconsulting.com

laojiangmath.com

authenticityhacking.com

family-doctor-53205.com

investinstgeorgeut.com

lithoearthsolution.africa

quickhealcareltd.co.uk

delightkgrillw.top

freezeclosettoilet.com

coo1star.com

gemgamut.com

enrichednetworksolutions.com

betterbeeclean.com

Signatures

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

Formbook payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/3864-163-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/3864-167-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/4988-172-0x00000000009B0000-0x00000000009DF000-memory.dmp	formbook
behavioral1/memory/4988-174-0x00000000009B0000-0x00000000009DF000-memory.dmp	formbook

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Control Panel\International\Geo\Nation	c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exeMSBuild.exechkdsk.exe

description	pid	process	target process
PID 4972 set thread context of 3864	4972	c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exe	MSBuild.exe
PID 3864 set thread context of 3188	3864	MSBuild.exe	Explorer.EXE
PID 4988 set thread context of 3188	4988	chkdsk.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 52 IoCs

Processes:

powershell.exeMSBuild.exechkdsk.exe

pid	process
1436	powershell.exe
1436	powershell.exe
3864	MSBuild.exe
3864	MSBuild.exe
3864	MSBuild.exe
3864	MSBuild.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe
4988	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3188 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

MSBuild.exechkdsk.exe

pid process

3864 MSBuild.exe
3864 MSBuild.exe
3864 MSBuild.exe
4988 chkdsk.exe
4988 chkdsk.exe

pid	process
3188	Explorer.EXE

pid	process
3864	MSBuild.exe
3864	MSBuild.exe
3864	MSBuild.exe
4988	chkdsk.exe
4988	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exepowershell.exeMSBuild.exechkdsk.exe

description	pid	process
Token: SeDebugPrivilege	4972	c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exe
Token: SeDebugPrivilege	1436	powershell.exe
Token: SeDebugPrivilege	3864	MSBuild.exe
Token: SeDebugPrivilege	4988	chkdsk.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 4972 wrote to memory of 1436	4972	c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exe	powershell.exe
PID 4972 wrote to memory of 1436	4972	c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exe	powershell.exe
PID 4972 wrote to memory of 1436	4972	c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exe	powershell.exe
PID 4972 wrote to memory of 3864	4972	c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exe	MSBuild.exe
PID 4972 wrote to memory of 3864	4972	c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exe	MSBuild.exe
PID 4972 wrote to memory of 3864	4972	c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exe	MSBuild.exe
PID 4972 wrote to memory of 3864	4972	c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exe	MSBuild.exe
PID 4972 wrote to memory of 3864	4972	c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exe	MSBuild.exe
PID 4972 wrote to memory of 3864	4972	c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exe	MSBuild.exe
PID 3188 wrote to memory of 4988	3188	Explorer.EXE	chkdsk.exe
PID 3188 wrote to memory of 4988	3188	Explorer.EXE	chkdsk.exe
PID 3188 wrote to memory of 4988	3188	Explorer.EXE	chkdsk.exe
PID 4988 wrote to memory of 4656	4988	chkdsk.exe	cmd.exe
PID 4988 wrote to memory of 4656	4988	chkdsk.exe	cmd.exe
PID 4988 wrote to memory of 4656	4988	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3188

C:\Users\Admin\AppData\Local\Temp\c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exe
"C:\Users\Admin\AppData\Local\Temp\c09f9057e4341633036324cbe43955122e503d1b73a979977b43030f4cf1ef10.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4972

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1436

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3864

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4988

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
3⤵
PID:4656

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_eg2ikzmb.s4c.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1436-157-0x0000000002CD0000-0x0000000002CE0000-memory.dmp

Filesize
64KB

Download
memory/1436-153-0x0000000007930000-0x0000000007FAA000-memory.dmp

Filesize
6.5MB

Download
memory/1436-156-0x0000000002CD0000-0x0000000002CE0000-memory.dmp

Filesize
64KB

Download
memory/1436-137-0x0000000002CD0000-0x0000000002CE0000-memory.dmp

Filesize
64KB

Download
memory/1436-138-0x0000000002CD0000-0x0000000002CE0000-memory.dmp

Filesize
64KB

Download
memory/1436-139-0x0000000005540000-0x0000000005B68000-memory.dmp

Filesize
6.2MB

Download
memory/1436-140-0x0000000005B70000-0x0000000005BD6000-memory.dmp

Filesize
408KB

Download
memory/1436-141-0x0000000005C50000-0x0000000005CB6000-memory.dmp

Filesize
408KB

Download
memory/1436-158-0x0000000002CD0000-0x0000000002CE0000-memory.dmp

Filesize
64KB

Download
memory/1436-151-0x00000000062F0000-0x000000000630E000-memory.dmp

Filesize
120KB

Download
memory/1436-152-0x0000000002CD0000-0x0000000002CE0000-memory.dmp

Filesize
64KB

Download
memory/1436-136-0x0000000002D40000-0x0000000002D76000-memory.dmp

Filesize
216KB

Download
memory/1436-154-0x00000000067F0000-0x000000000680A000-memory.dmp

Filesize
104KB

Download
memory/3188-178-0x0000000008C10000-0x0000000008D1A000-memory.dmp

Filesize
1.0MB

Download
memory/3188-169-0x0000000008A60000-0x0000000008B8A000-memory.dmp

Filesize
1.2MB

Download
memory/3188-180-0x0000000008C10000-0x0000000008D1A000-memory.dmp

Filesize
1.0MB

Download
memory/3188-177-0x0000000008C10000-0x0000000008D1A000-memory.dmp

Filesize
1.0MB

Download
memory/3864-163-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3864-166-0x00000000010E0000-0x000000000142A000-memory.dmp

Filesize
3.3MB

Download
memory/3864-168-0x0000000000C70000-0x0000000000C84000-memory.dmp

Filesize
80KB

Download
memory/3864-167-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4972-134-0x0000000005820000-0x0000000005830000-memory.dmp

Filesize
64KB

Download
memory/4972-135-0x0000000007160000-0x0000000007182000-memory.dmp

Filesize
136KB

Download
memory/4972-155-0x0000000005820000-0x0000000005830000-memory.dmp

Filesize
64KB

Download
memory/4972-133-0x0000000000D60000-0x0000000000E98000-memory.dmp

Filesize
1.2MB

Download
memory/4988-170-0x0000000000680000-0x000000000068A000-memory.dmp

Filesize
40KB

Download
memory/4988-171-0x0000000000680000-0x000000000068A000-memory.dmp

Filesize
40KB

Download
memory/4988-172-0x00000000009B0000-0x00000000009DF000-memory.dmp

Filesize
188KB

Download
memory/4988-173-0x0000000001380000-0x00000000016CA000-memory.dmp

Filesize
3.3MB

Download
memory/4988-174-0x00000000009B0000-0x00000000009DF000-memory.dmp

Filesize
188KB

Download
memory/4988-176-0x00000000011C0000-0x0000000001253000-memory.dmp

Filesize
588KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads