formbook | dfa72cfd2cf8b1c3beac907a91042e344a301923e8e40b88541e850161eae6eb

General

Target

JaffaCakes118_1d024b5fb222f690e2437776dba5cecd.exe
Size

431KB
MD5

1d024b5fb222f690e2437776dba5cecd
SHA1

3bc42dd5835072842a7dbe4bc75db9480d4781e9
SHA256

dfa72cfd2cf8b1c3beac907a91042e344a301923e8e40b88541e850161eae6eb
SHA512

e1812ba005ed0d873cc43233d156f35b126d47228ec204900137f3676685a501ab1440b45d50b66b72da9114421d292f60ff1bbe817ea7200ef8c0a54cce2b51
SSDEEP

12288:NVKqL95GKVh5QIXIxUOCY+5JHgc/73EW6kSb836D4X4pznu:NV9NB6+5Wc/7UWobAiOMnu

Score

10^/10

formbook h0gd discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

h0gd

Decoy

hispansud.com

sanslisin156.com

izmediajo.com

fukugyo-kuchicomi.net

zjzmkj.net

powerupinnovations.com

unigradecuracao.net

inspirasimagz.com

isaacnqwilliams.store

john316graphics.net

wcparadise.net

trejoblanco.com

100x100cultura.com

beedivinehomedecor.com

polant.xyz

ascrete.com

www23855.com

emmagx.com

rekotalent.biz

fersamultiservicios.com

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral2/memory/3388-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3388-17-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3388-20-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3744-26-0x0000000001250000-0x000000000127F000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 4868 set thread context of 3388	4868	JaffaCakes118_1d024b5fb222f690e2437776dba5cecd.exe	102
PID 3388 set thread context of 3528	3388	MSBuild.exe	56
PID 3388 set thread context of 3528	3388	MSBuild.exe	56
PID 3744 set thread context of 3528	3744	chkdsk.exe	56

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	chkdsk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1d024b5fb222f690e2437776dba5cecd.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

Suspicious behavior: EnumeratesProcesses 40 IoCs

pid	Process
3388	MSBuild.exe
3388	MSBuild.exe
3388	MSBuild.exe
3388	MSBuild.exe
3388	MSBuild.exe
3388	MSBuild.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe
3744	chkdsk.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3388	MSBuild.exe
3388	MSBuild.exe
3388	MSBuild.exe
3388	MSBuild.exe
3744	chkdsk.exe
3744	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3388	MSBuild.exe
Token: SeDebugPrivilege	3744	chkdsk.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4868 wrote to memory of 3388	4868	JaffaCakes118_1d024b5fb222f690e2437776dba5cecd.exe	102
PID 4868 wrote to memory of 3388	4868	JaffaCakes118_1d024b5fb222f690e2437776dba5cecd.exe	102
PID 4868 wrote to memory of 3388	4868	JaffaCakes118_1d024b5fb222f690e2437776dba5cecd.exe	102
PID 4868 wrote to memory of 3388	4868	JaffaCakes118_1d024b5fb222f690e2437776dba5cecd.exe	102
PID 4868 wrote to memory of 3388	4868	JaffaCakes118_1d024b5fb222f690e2437776dba5cecd.exe	102
PID 4868 wrote to memory of 3388	4868	JaffaCakes118_1d024b5fb222f690e2437776dba5cecd.exe	102
PID 3528 wrote to memory of 3744	3528	Explorer.EXE	104
PID 3528 wrote to memory of 3744	3528	Explorer.EXE	104
PID 3528 wrote to memory of 3744	3528	Explorer.EXE	104
PID 3744 wrote to memory of 1964	3744	chkdsk.exe	105
PID 3744 wrote to memory of 1964	3744	chkdsk.exe	105
PID 3744 wrote to memory of 1964	3744	chkdsk.exe	105

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3528
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1d024b5fb222f690e2437776dba5cecd.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1d024b5fb222f690e2437776dba5cecd.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4868
- - 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:3388
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3744
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1964

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3388-20-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3388-16-0x00000000013E0000-0x00000000013F4000-memory.dmp

Filesize
80KB

Download
memory/3388-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3388-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3388-15-0x0000000001500000-0x000000000184A000-memory.dmp

Filesize
3.3MB

Download
memory/3388-21-0x00000000014A0000-0x00000000014B4000-memory.dmp

Filesize
80KB

Download
memory/3528-30-0x00000000073F0000-0x00000000074DE000-memory.dmp

Filesize
952KB

Download
memory/3528-22-0x0000000008980000-0x0000000008B29000-memory.dmp

Filesize
1.7MB

Download
memory/3528-23-0x0000000002CF0000-0x0000000002DCD000-memory.dmp

Filesize
884KB

Download
memory/3528-18-0x0000000002CF0000-0x0000000002DCD000-memory.dmp

Filesize
884KB

Download
memory/3528-27-0x0000000008980000-0x0000000008B29000-memory.dmp

Filesize
1.7MB

Download
memory/3528-32-0x00000000073F0000-0x00000000074DE000-memory.dmp

Filesize
952KB

Download
memory/3528-33-0x00000000073F0000-0x00000000074DE000-memory.dmp

Filesize
952KB

Download
memory/3744-24-0x00000000009E0000-0x00000000009EA000-memory.dmp

Filesize
40KB

Download
memory/3744-25-0x00000000009E0000-0x00000000009EA000-memory.dmp

Filesize
40KB

Download
memory/3744-26-0x0000000001250000-0x000000000127F000-memory.dmp

Filesize
188KB

Download
memory/4868-8-0x000000007492E000-0x000000007492F000-memory.dmp

Filesize
4KB

Download
memory/4868-13-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4868-7-0x00000000051E0000-0x00000000051EE000-memory.dmp

Filesize
56KB

Download
memory/4868-6-0x0000000006020000-0x00000000060BC000-memory.dmp

Filesize
624KB

Download
memory/4868-4-0x0000000004D30000-0x0000000004D3A000-memory.dmp

Filesize
40KB

Download
memory/4868-0-0x000000007492E000-0x000000007492F000-memory.dmp

Filesize
4KB

Download
memory/4868-9-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4868-10-0x0000000009D40000-0x0000000009D98000-memory.dmp

Filesize
352KB

Download
memory/4868-5-0x0000000074920000-0x00000000750D0000-memory.dmp

Filesize
7.7MB

Download
memory/4868-3-0x0000000004B90000-0x0000000004C22000-memory.dmp

Filesize
584KB

Download
memory/4868-2-0x00000000051F0000-0x0000000005794000-memory.dmp

Filesize
5.6MB

Download
memory/4868-1-0x0000000000150000-0x00000000001C2000-memory.dmp

Filesize
456KB

Download

Analysis

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