formbook | 701893f05fb7f11f4f0bbbc6b7f4c540e4c8d5e5d5cd98d42db973fb89eaed0a

General

Target

538375308232021.exe
Size

853KB
MD5

dc09fa8c42e8c65946e8eb777a5be3e8
SHA1

53bc5551ad267c44dffa4ba27a7c64045845d05d
SHA256

93c2cb3a004ba55c70aa8b1cb9d4444b2294fb9fc5ae479a3abf3c2743c8c532
SHA512

5ff0fd59408efcfdba56ade588ba9f3515b5b34d9644bafab4d5d1c71354fd1a71cd6f5ec8e2f607381350eb27da60bddbb2ece09acabc9790e5b1d77d3e5f14
SSDEEP

12288:BX33Ez9LvzcTrtWTxwjntMws+dN9Op1LCEDFgAbvjmyV/:BX3yL4ZW+js+D9Gh5ZrOyV/

Score

10^/10

formbook gz92 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

gz92

Decoy

ayurvedichealthformulas.com

plazaconstrutora.com

nat-hetong.info

eapdigital.com

ibluebaytvwdshop.com

committable.com

escapesbyek.com

mywebdesigner.pro

jianianhong.com

benvenutoqui.com

beiyet.com

theartofgifs.com

mbwvyksnk.icu

nshahwelfare.com

hhhservice.com

thechaibali.com

travelscreen.expert

best123-movies.com

leiahin.com

runplay11.com

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2576-12-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/2576-16-0x0000000000400000-0x000000000042E000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
904	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2268 set thread context of 2576	2268	538375308232021.exe	30
PID 2576 set thread context of 1180	2576	538375308232021.exe	21
PID 2156 set thread context of 1180	2156	mstsc.exe	21

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	538375308232021.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mstsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
2576	538375308232021.exe
2576	538375308232021.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe
2156	mstsc.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2576	538375308232021.exe
2576	538375308232021.exe
2576	538375308232021.exe
2156	mstsc.exe
2156	mstsc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2576	538375308232021.exe
Token: SeDebugPrivilege	2156	mstsc.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 2576	2268	538375308232021.exe	30
PID 2268 wrote to memory of 2576	2268	538375308232021.exe	30
PID 2268 wrote to memory of 2576	2268	538375308232021.exe	30
PID 2268 wrote to memory of 2576	2268	538375308232021.exe	30
PID 2268 wrote to memory of 2576	2268	538375308232021.exe	30
PID 2268 wrote to memory of 2576	2268	538375308232021.exe	30
PID 2268 wrote to memory of 2576	2268	538375308232021.exe	30
PID 1180 wrote to memory of 2156	1180	Explorer.EXE	31
PID 1180 wrote to memory of 2156	1180	Explorer.EXE	31
PID 1180 wrote to memory of 2156	1180	Explorer.EXE	31
PID 1180 wrote to memory of 2156	1180	Explorer.EXE	31
PID 2156 wrote to memory of 904	2156	mstsc.exe	32
PID 2156 wrote to memory of 904	2156	mstsc.exe	32
PID 2156 wrote to memory of 904	2156	mstsc.exe	32
PID 2156 wrote to memory of 904	2156	mstsc.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1180
- C:\Users\Admin\AppData\Local\Temp\538375308232021.exe
  "C:\Users\Admin\AppData\Local\Temp\538375308232021.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2268
- - C:\Users\Admin\AppData\Local\Temp\538375308232021.exe
    "C:\Users\Admin\AppData\Local\Temp\538375308232021.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2576
- C:\Windows\SysWOW64\mstsc.exe
  "C:\Windows\SysWOW64\mstsc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2156
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\538375308232021.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:904

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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/1180-18-0x0000000006BB0000-0x0000000006C6C000-memory.dmp

Filesize
752KB

Download
memory/1180-22-0x0000000004290000-0x0000000004490000-memory.dmp

Filesize
2.0MB

Download
memory/1180-21-0x0000000006BB0000-0x0000000006C6C000-memory.dmp

Filesize
752KB

Download
memory/2156-20-0x0000000000200000-0x0000000000304000-memory.dmp

Filesize
1.0MB

Download
memory/2156-19-0x0000000000200000-0x0000000000304000-memory.dmp

Filesize
1.0MB

Download
memory/2268-13-0x0000000074D70000-0x000000007545E000-memory.dmp

Filesize
6.9MB

Download
memory/2268-5-0x0000000074D70000-0x000000007545E000-memory.dmp

Filesize
6.9MB

Download
memory/2268-7-0x0000000000760000-0x000000000079C000-memory.dmp

Filesize
240KB

Download
memory/2268-1-0x00000000001C0000-0x000000000029C000-memory.dmp

Filesize
880KB

Download
memory/2268-2-0x0000000074D70000-0x000000007545E000-memory.dmp

Filesize
6.9MB

Download
memory/2268-0-0x0000000074D7E000-0x0000000074D7F000-memory.dmp

Filesize
4KB

Download
memory/2268-3-0x0000000000330000-0x0000000000348000-memory.dmp

Filesize
96KB

Download
memory/2268-6-0x0000000005880000-0x000000000592C000-memory.dmp

Filesize
688KB

Download
memory/2268-4-0x0000000074D7E000-0x0000000074D7F000-memory.dmp

Filesize
4KB

Download
memory/2576-8-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2576-17-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/2576-16-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2576-14-0x0000000000A00000-0x0000000000D03000-memory.dmp

Filesize
3.0MB

Download
memory/2576-9-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2576-12-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2576-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download

Analysis

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