formbook | c9bdb8c092e5af89aacb7feae545fa43da02c84f6ac74a3a60cef3f9076c0ca4

General

Target

tmp.exe
Size

5.0MB
MD5

5288674c2d9557bd89a0aab4869f1f60
SHA1

687b6337728a7e4fa646bfd1b0ddce84bcedf23d
SHA256

c9bdb8c092e5af89aacb7feae545fa43da02c84f6ac74a3a60cef3f9076c0ca4
SHA512

5305880363570bd0da5ae95fca7b54dfd70e4cb1a090c72a46420d4ce76bdb6b1b56753ef36a57d26cc06012d3028fbbb11c9afa0c6e33ec59b84caf27ad3eff
SSDEEP

49152:RsOS3uqy5zwcdnOJgYGT0f7fVGyfxHN5ixWRAhMGOuhSTDMj:0ebweOJF7Q

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/900-71-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/900-75-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1660-80-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook
behavioral1/memory/1660-82-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

tmp.exeMSBuild.exewininit.exe

description	pid	process	target process
PID 1344 set thread context of 900	1344	tmp.exe	MSBuild.exe
PID 900 set thread context of 1200	900	MSBuild.exe	Explorer.EXE
PID 1660 set thread context of 1200	1660	wininit.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 19 IoCs

Processes:

powershell.exeMSBuild.exewininit.exe

pid	process
1772	powershell.exe
900	MSBuild.exe
900	MSBuild.exe
1660	wininit.exe
1660	wininit.exe
1660	wininit.exe
1660	wininit.exe
1660	wininit.exe
1660	wininit.exe
1660	wininit.exe
1660	wininit.exe
1660	wininit.exe
1660	wininit.exe
1660	wininit.exe
1660	wininit.exe
1660	wininit.exe
1660	wininit.exe
1660	wininit.exe
1660	wininit.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1200 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

MSBuild.exewininit.exe

pid process

900 MSBuild.exe
900 MSBuild.exe
900 MSBuild.exe
1660 wininit.exe
1660 wininit.exe

pid	process
1200	Explorer.EXE

pid	process
900	MSBuild.exe
900	MSBuild.exe
900	MSBuild.exe
1660	wininit.exe
1660	wininit.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

tmp.exepowershell.exeMSBuild.exewininit.exe

description	pid	process
Token: SeDebugPrivilege	1344	tmp.exe
Token: SeDebugPrivilege	1772	powershell.exe
Token: SeDebugPrivilege	900	MSBuild.exe
Token: SeDebugPrivilege	1660	wininit.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

tmp.exeExplorer.EXEwininit.exe

description	pid	process	target process
PID 1344 wrote to memory of 1772	1344	tmp.exe	powershell.exe
PID 1344 wrote to memory of 1772	1344	tmp.exe	powershell.exe
PID 1344 wrote to memory of 1772	1344	tmp.exe	powershell.exe
PID 1344 wrote to memory of 1772	1344	tmp.exe	powershell.exe
PID 1344 wrote to memory of 900	1344	tmp.exe	MSBuild.exe
PID 1344 wrote to memory of 900	1344	tmp.exe	MSBuild.exe
PID 1344 wrote to memory of 900	1344	tmp.exe	MSBuild.exe
PID 1344 wrote to memory of 900	1344	tmp.exe	MSBuild.exe
PID 1344 wrote to memory of 900	1344	tmp.exe	MSBuild.exe
PID 1344 wrote to memory of 900	1344	tmp.exe	MSBuild.exe
PID 1344 wrote to memory of 900	1344	tmp.exe	MSBuild.exe
PID 1200 wrote to memory of 1660	1200	Explorer.EXE	wininit.exe
PID 1200 wrote to memory of 1660	1200	Explorer.EXE	wininit.exe
PID 1200 wrote to memory of 1660	1200	Explorer.EXE	wininit.exe
PID 1200 wrote to memory of 1660	1200	Explorer.EXE	wininit.exe
PID 1660 wrote to memory of 756	1660	wininit.exe	cmd.exe
PID 1660 wrote to memory of 756	1660	wininit.exe	cmd.exe
PID 1660 wrote to memory of 756	1660	wininit.exe	cmd.exe
PID 1660 wrote to memory of 756	1660	wininit.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1200

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1344

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:1772

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:900

C:\Windows\SysWOW64\wininit.exe
"C:\Windows\SysWOW64\wininit.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1660

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
3⤵
PID:756

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

Replay Monitor

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Downloads

memory/900-68-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/900-76-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/900-75-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/900-74-0x0000000000870000-0x0000000000B73000-memory.dmp

Filesize
3.0MB

Download
memory/900-71-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/900-70-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/900-69-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1200-86-0x0000000007480000-0x000000000760D000-memory.dmp

Filesize
1.6MB

Download
memory/1200-77-0x00000000064A0000-0x000000000660C000-memory.dmp

Filesize
1.4MB

Download
memory/1200-84-0x0000000003840000-0x0000000003940000-memory.dmp

Filesize
1024KB

Download
memory/1200-87-0x0000000007480000-0x000000000760D000-memory.dmp

Filesize
1.6MB

Download
memory/1200-89-0x0000000007480000-0x000000000760D000-memory.dmp

Filesize
1.6MB

Download
memory/1200-73-0x0000000003840000-0x0000000003940000-memory.dmp

Filesize
1024KB

Download
memory/1344-54-0x00000000000E0000-0x00000000005E0000-memory.dmp

Filesize
5.0MB

Download
memory/1344-59-0x0000000006020000-0x00000000060B2000-memory.dmp

Filesize
584KB

Download
memory/1344-58-0x0000000000D70000-0x0000000000DA2000-memory.dmp

Filesize
200KB

Download
memory/1344-57-0x00000000063D0000-0x0000000006500000-memory.dmp

Filesize
1.2MB

Download
memory/1344-56-0x0000000004710000-0x0000000004750000-memory.dmp

Filesize
256KB

Download
memory/1344-55-0x0000000004710000-0x0000000004750000-memory.dmp

Filesize
256KB

Download
memory/1660-79-0x0000000000C70000-0x0000000000C8A000-memory.dmp

Filesize
104KB

Download
memory/1660-78-0x0000000000C70000-0x0000000000C8A000-memory.dmp

Filesize
104KB

Download
memory/1660-80-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/1660-81-0x0000000002090000-0x0000000002393000-memory.dmp

Filesize
3.0MB

Download
memory/1660-82-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/1660-85-0x0000000000360000-0x00000000003F3000-memory.dmp

Filesize
588KB

Download
memory/1772-66-0x0000000002630000-0x0000000002670000-memory.dmp

Filesize
256KB

Download
memory/1772-65-0x0000000002630000-0x0000000002670000-memory.dmp

Filesize
256KB

Download
memory/1772-64-0x0000000002630000-0x0000000002670000-memory.dmp

Filesize
256KB

Download
memory/1772-63-0x0000000002630000-0x0000000002670000-memory.dmp

Filesize
256KB

Download
memory/1772-62-0x0000000002630000-0x0000000002670000-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