formbook | 1da1d27f8c3f4188f1767f87ae85c14e1fda3fa80142af97697864580f1a2397

General

Target

tmp.exe
Size

1.8MB
MD5

e4a076e7e4ef7dda7760195ed7e69a63
SHA1

01a916d1cb5acae7bcd2e8382d9a3691a2b90b39
SHA256

1da1d27f8c3f4188f1767f87ae85c14e1fda3fa80142af97697864580f1a2397
SHA512

8b23da6af698c2431bb7828291b5da97ba0f0bb87e7f51d623e083eb0e4b408fbb14725b043941ac1afee5dbae6d6c6d4d3780ecc17cd16ad4686b76a4797dbd
SSDEEP

24576:2QpweQZGHo2z01GURwAsmMt+Z1fQh0UXtk/O93eIu0:GGH/b+Z1fQh0Uygu0

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/1524-67-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1524-70-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1344-75-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook
behavioral1/memory/1344-77-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

tmp.exeMSBuild.exeraserver.exe

description	pid	process	target process
PID 2000 set thread context of 1524	2000	tmp.exe	MSBuild.exe
PID 1524 set thread context of 1188	1524	MSBuild.exe	Explorer.EXE
PID 1344 set thread context of 1188	1344	raserver.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 24 IoCs

Processes:

powershell.exetmp.exeMSBuild.exeraserver.exe

pid	process
1812	powershell.exe
2000	tmp.exe
1524	MSBuild.exe
1524	MSBuild.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe
1344	raserver.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1188 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

MSBuild.exeraserver.exe

pid process

1524 MSBuild.exe
1524 MSBuild.exe
1524 MSBuild.exe
1344 raserver.exe
1344 raserver.exe

pid	process
1188	Explorer.EXE

pid	process
1524	MSBuild.exe
1524	MSBuild.exe
1524	MSBuild.exe
1344	raserver.exe
1344	raserver.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

tmp.exepowershell.exeMSBuild.exeraserver.exe

description	pid	process
Token: SeDebugPrivilege	2000	tmp.exe
Token: SeDebugPrivilege	1812	powershell.exe
Token: SeDebugPrivilege	1524	MSBuild.exe
Token: SeDebugPrivilege	1344	raserver.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

tmp.exeExplorer.EXEraserver.exe

description	pid	process	target process
PID 2000 wrote to memory of 1812	2000	tmp.exe	powershell.exe
PID 2000 wrote to memory of 1812	2000	tmp.exe	powershell.exe
PID 2000 wrote to memory of 1812	2000	tmp.exe	powershell.exe
PID 2000 wrote to memory of 1812	2000	tmp.exe	powershell.exe
PID 2000 wrote to memory of 1932	2000	tmp.exe	MSBuild.exe
PID 2000 wrote to memory of 1932	2000	tmp.exe	MSBuild.exe
PID 2000 wrote to memory of 1932	2000	tmp.exe	MSBuild.exe
PID 2000 wrote to memory of 1932	2000	tmp.exe	MSBuild.exe
PID 2000 wrote to memory of 1524	2000	tmp.exe	MSBuild.exe
PID 2000 wrote to memory of 1524	2000	tmp.exe	MSBuild.exe
PID 2000 wrote to memory of 1524	2000	tmp.exe	MSBuild.exe
PID 2000 wrote to memory of 1524	2000	tmp.exe	MSBuild.exe
PID 2000 wrote to memory of 1524	2000	tmp.exe	MSBuild.exe
PID 2000 wrote to memory of 1524	2000	tmp.exe	MSBuild.exe
PID 2000 wrote to memory of 1524	2000	tmp.exe	MSBuild.exe
PID 1188 wrote to memory of 1344	1188	Explorer.EXE	raserver.exe
PID 1188 wrote to memory of 1344	1188	Explorer.EXE	raserver.exe
PID 1188 wrote to memory of 1344	1188	Explorer.EXE	raserver.exe
PID 1188 wrote to memory of 1344	1188	Explorer.EXE	raserver.exe
PID 1344 wrote to memory of 1328	1344	raserver.exe	cmd.exe
PID 1344 wrote to memory of 1328	1344	raserver.exe	cmd.exe
PID 1344 wrote to memory of 1328	1344	raserver.exe	cmd.exe
PID 1344 wrote to memory of 1328	1344	raserver.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1188

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2000

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:1812

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
3⤵
PID:1932

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:1524

C:\Windows\SysWOW64\raserver.exe
"C:\Windows\SysWOW64\raserver.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1344

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
3⤵
PID:1328

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1188-72-0x0000000004ED0000-0x0000000005049000-memory.dmp

Filesize
1.5MB

Download
memory/1188-83-0x00000000064D0000-0x00000000065E6000-memory.dmp

Filesize
1.1MB

Download
memory/1188-81-0x00000000064D0000-0x00000000065E6000-memory.dmp

Filesize
1.1MB

Download
memory/1188-80-0x00000000064D0000-0x00000000065E6000-memory.dmp

Filesize
1.1MB

Download
memory/1344-79-0x0000000000390000-0x0000000000423000-memory.dmp

Filesize
588KB

Download
memory/1344-77-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/1344-76-0x0000000001FB0000-0x00000000022B3000-memory.dmp

Filesize
3.0MB

Download
memory/1344-75-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/1344-74-0x0000000000B90000-0x0000000000BAC000-memory.dmp

Filesize
112KB

Download
memory/1344-73-0x0000000000B90000-0x0000000000BAC000-memory.dmp

Filesize
112KB

Download
memory/1524-71-0x0000000000150000-0x0000000000164000-memory.dmp

Filesize
80KB

Download
memory/1524-64-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1524-69-0x0000000000970000-0x0000000000C73000-memory.dmp

Filesize
3.0MB

Download
memory/1524-70-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1524-67-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1524-66-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1524-65-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1812-62-0x0000000002660000-0x00000000026A0000-memory.dmp

Filesize
256KB

Download
memory/1812-60-0x0000000002660000-0x00000000026A0000-memory.dmp

Filesize
256KB

Download
memory/2000-54-0x0000000000950000-0x0000000000B1A000-memory.dmp

Filesize
1.8MB

Download
memory/2000-61-0x0000000004EC0000-0x0000000004F00000-memory.dmp

Filesize
256KB

Download
memory/2000-57-0x00000000082D0000-0x0000000008362000-memory.dmp

Filesize
584KB

Download
memory/2000-56-0x0000000008780000-0x00000000088E6000-memory.dmp

Filesize
1.4MB

Download
memory/2000-55-0x0000000004EC0000-0x0000000004F00000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads