formbook | dfb9a75bd82bcf0d9f72647affdf954d936d629eb3be78fe4b5c9b5166ccb9d6

General

Target

eebdd5b69b2fbe296a4e848b6ece83e7.exe
Size

88KB
MD5

eebdd5b69b2fbe296a4e848b6ece83e7
SHA1

a416b80860c5810aa92c72382eb34c29a36ad34a
SHA256

dfb9a75bd82bcf0d9f72647affdf954d936d629eb3be78fe4b5c9b5166ccb9d6
SHA512

b3d4a1cde995d12e16367fd0437a0fcd2bf52081aba40eace547e79838d17de40bb5162112132d3d1c49f7baf9a4c1581a8c4f696df64b4321c6f7cd27245afa
SSDEEP

1536:LgBV6YZ3juIBFXJpk+CfZxtLOgiC2fjYYYYYYfpQpQpQpPd49N7H:UBV6KTBBFXJpk+CfZHLO1zfzpQpQpQp+

Score

10^/10

formbook purecrypter ar73 downloader loader rat spyware stealer trojan

Malware Config

Extracted

Family

purecrypter

C2

http://192.3.215.60/uo7/Cbqta.png

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
PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter

Formbook payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2088-163-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2088-167-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2340-173-0x0000000000B20000-0x0000000000B4F000-memory.dmp	formbook
behavioral2/memory/2340-175-0x0000000000B20000-0x0000000000B4F000-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:

eebdd5b69b2fbe296a4e848b6ece83e7.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1675742406-747946869-1029867430-1000\Control Panel\International\Geo\Nation	eebdd5b69b2fbe296a4e848b6ece83e7.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

eebdd5b69b2fbe296a4e848b6ece83e7.exeMSBuild.execmd.exe

description	pid	process	target process
PID 1012 set thread context of 2088	1012	eebdd5b69b2fbe296a4e848b6ece83e7.exe	MSBuild.exe
PID 2088 set thread context of 3172	2088	MSBuild.exe	Explorer.EXE
PID 2340 set thread context of 3172	2340	cmd.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

Suspicious behavior: EnumeratesProcesses 50 IoCs

Processes:

powershell.exeMSBuild.execmd.exe

pid	process
1464	powershell.exe
1464	powershell.exe
2088	MSBuild.exe
2088	MSBuild.exe
2088	MSBuild.exe
2088	MSBuild.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe
2340	cmd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3172 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

MSBuild.execmd.exe

pid process

2088 MSBuild.exe
2088 MSBuild.exe
2088 MSBuild.exe
2340 cmd.exe
2340 cmd.exe

pid	process
3172	Explorer.EXE

pid	process
2088	MSBuild.exe
2088	MSBuild.exe
2088	MSBuild.exe
2340	cmd.exe
2340	cmd.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

eebdd5b69b2fbe296a4e848b6ece83e7.exepowershell.exeMSBuild.execmd.exe

description	pid	process
Token: SeDebugPrivilege	1012	eebdd5b69b2fbe296a4e848b6ece83e7.exe
Token: SeDebugPrivilege	1464	powershell.exe
Token: SeDebugPrivilege	2088	MSBuild.exe
Token: SeDebugPrivilege	2340	cmd.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

eebdd5b69b2fbe296a4e848b6ece83e7.exeExplorer.EXEcmd.exe

description	pid	process	target process
PID 1012 wrote to memory of 1464	1012	eebdd5b69b2fbe296a4e848b6ece83e7.exe	powershell.exe
PID 1012 wrote to memory of 1464	1012	eebdd5b69b2fbe296a4e848b6ece83e7.exe	powershell.exe
PID 1012 wrote to memory of 1464	1012	eebdd5b69b2fbe296a4e848b6ece83e7.exe	powershell.exe
PID 1012 wrote to memory of 2088	1012	eebdd5b69b2fbe296a4e848b6ece83e7.exe	MSBuild.exe
PID 1012 wrote to memory of 2088	1012	eebdd5b69b2fbe296a4e848b6ece83e7.exe	MSBuild.exe
PID 1012 wrote to memory of 2088	1012	eebdd5b69b2fbe296a4e848b6ece83e7.exe	MSBuild.exe
PID 1012 wrote to memory of 2088	1012	eebdd5b69b2fbe296a4e848b6ece83e7.exe	MSBuild.exe
PID 1012 wrote to memory of 2088	1012	eebdd5b69b2fbe296a4e848b6ece83e7.exe	MSBuild.exe
PID 1012 wrote to memory of 2088	1012	eebdd5b69b2fbe296a4e848b6ece83e7.exe	MSBuild.exe
PID 3172 wrote to memory of 2340	3172	Explorer.EXE	cmd.exe
PID 3172 wrote to memory of 2340	3172	Explorer.EXE	cmd.exe
PID 3172 wrote to memory of 2340	3172	Explorer.EXE	cmd.exe
PID 2340 wrote to memory of 4472	2340	cmd.exe	cmd.exe
PID 2340 wrote to memory of 4472	2340	cmd.exe	cmd.exe
PID 2340 wrote to memory of 4472	2340	cmd.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3172

C:\Users\Admin\AppData\Local\Temp\eebdd5b69b2fbe296a4e848b6ece83e7.exe
"C:\Users\Admin\AppData\Local\Temp\eebdd5b69b2fbe296a4e848b6ece83e7.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1012

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:1464

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:2088

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\SysWOW64\cmd.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2340

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
3⤵
PID:4472

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4jlawakn.kp4.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1012-134-0x00000000053E0000-0x00000000053F0000-memory.dmp

Filesize
64KB

Download
memory/1012-135-0x0000000006D10000-0x0000000006D32000-memory.dmp

Filesize
136KB

Download
memory/1012-133-0x0000000000900000-0x000000000091C000-memory.dmp

Filesize
112KB

Download
memory/1012-155-0x00000000053E0000-0x00000000053F0000-memory.dmp

Filesize
64KB

Download
memory/1464-157-0x0000000002C60000-0x0000000002C70000-memory.dmp

Filesize
64KB

Download
memory/1464-138-0x0000000005FE0000-0x0000000006046000-memory.dmp

Filesize
408KB

Download
memory/1464-144-0x0000000006050000-0x00000000060B6000-memory.dmp

Filesize
408KB

Download
memory/1464-149-0x0000000002C60000-0x0000000002C70000-memory.dmp

Filesize
64KB

Download
memory/1464-150-0x0000000002C60000-0x0000000002C70000-memory.dmp

Filesize
64KB

Download
memory/1464-151-0x0000000006670000-0x000000000668E000-memory.dmp

Filesize
120KB

Download
memory/1464-152-0x0000000007EE0000-0x000000000855A000-memory.dmp

Filesize
6.5MB

Download
memory/1464-153-0x0000000006B60000-0x0000000006B7A000-memory.dmp

Filesize
104KB

Download
memory/1464-154-0x0000000002C60000-0x0000000002C70000-memory.dmp

Filesize
64KB

Download
memory/1464-137-0x0000000005940000-0x0000000005F68000-memory.dmp

Filesize
6.2MB

Download
memory/1464-156-0x0000000002C60000-0x0000000002C70000-memory.dmp

Filesize
64KB

Download
memory/1464-136-0x0000000003090000-0x00000000030C6000-memory.dmp

Filesize
216KB

Download
memory/1464-158-0x0000000002C60000-0x0000000002C70000-memory.dmp

Filesize
64KB

Download
memory/2088-163-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2088-166-0x0000000000EA0000-0x00000000011EA000-memory.dmp

Filesize
3.3MB

Download
memory/2088-168-0x0000000000E80000-0x0000000000E94000-memory.dmp

Filesize
80KB

Download
memory/2088-167-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2340-177-0x00000000011E0000-0x0000000001273000-memory.dmp

Filesize
588KB

Download
memory/2340-170-0x0000000000760000-0x00000000007BA000-memory.dmp

Filesize
360KB

Download
memory/2340-172-0x0000000000760000-0x00000000007BA000-memory.dmp

Filesize
360KB

Download
memory/2340-173-0x0000000000B20000-0x0000000000B4F000-memory.dmp

Filesize
188KB

Download
memory/2340-174-0x0000000001370000-0x00000000016BA000-memory.dmp

Filesize
3.3MB

Download
memory/2340-175-0x0000000000B20000-0x0000000000B4F000-memory.dmp

Filesize
188KB

Download
memory/3172-169-0x0000000007E30000-0x0000000007F37000-memory.dmp

Filesize
1.0MB

Download
memory/3172-178-0x0000000008510000-0x0000000008686000-memory.dmp

Filesize
1.5MB

Download
memory/3172-179-0x0000000008510000-0x0000000008686000-memory.dmp

Filesize
1.5MB

Download
memory/3172-181-0x0000000008510000-0x0000000008686000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads