formbook | 954b75a2c0fb7a8350307cfbc283e65ab46c000ad652236a1d5d5a9f9af950b5

General

Target

Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
Size

841KB
MD5

42d33f1103e99970b5a2bd66cc7abacf
SHA1

18b40de46605a148bd005f07f1396ea4be30f962
SHA256

898019809aff31148304abc19ab0514838d5ed4ae75318fe8865b4e5b139d52f
SHA512

471ef7e285ae5bb0db67e6722dde3877180d980f1cef271bf81e8c1f8c3fbd26ffa435eb04b0ef14ae6898ac26ed8b235eb9b203947aa4020955e5989e22fbbc
SSDEEP

12288:Duup9hCcfZ/2Yp45XWCPrpLlafo3arpcYVx1Izq+lG/hS2zG9+aw9cNq0p2W:qrk/2Yp4JWKmhpcewu+lghjZqN

Score

10^/10

formbook wk31 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

wk31

Decoy

soroban.xyz

irfirstaid.com

irsaycollection.com

thebardownstairsasheville.com

facebookmeta.business

paypalsupportclient.com

metaversusfacebook.com

litakparuikamazon.com

rivianmotorcompany.com

metaversepro.us

ikramfamilypractice.com

bitcoinfuturesetfs.online

5donline.com

rosemount.us

nicole-steinfort.com

performanceautorepairsj.com

scrabblecheats.us

kjg67amazon.com

formerlyknownasfacebook.com

youtubeandgooglepay.online

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2632-14-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2632-18-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/3040-25-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
1580	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2668 set thread context of 2632	2668	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	30
PID 2632 set thread context of 1220	2632	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	21
PID 3040 set thread context of 1220	3040	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	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.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 23 IoCs

pid	Process
2632	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
2632	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe
3040	mstsc.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2632	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
2632	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
2632	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
3040	mstsc.exe
3040	mstsc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2632	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
Token: SeDebugPrivilege	3040	mstsc.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2632	2668	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	30
PID 2668 wrote to memory of 2632	2668	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	30
PID 2668 wrote to memory of 2632	2668	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	30
PID 2668 wrote to memory of 2632	2668	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	30
PID 2668 wrote to memory of 2632	2668	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	30
PID 2668 wrote to memory of 2632	2668	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	30
PID 2668 wrote to memory of 2632	2668	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	30
PID 1220 wrote to memory of 3040	1220	Explorer.EXE	31
PID 1220 wrote to memory of 3040	1220	Explorer.EXE	31
PID 1220 wrote to memory of 3040	1220	Explorer.EXE	31
PID 1220 wrote to memory of 3040	1220	Explorer.EXE	31
PID 3040 wrote to memory of 1580	3040	mstsc.exe	32
PID 3040 wrote to memory of 1580	3040	mstsc.exe	32
PID 3040 wrote to memory of 1580	3040	mstsc.exe	32
PID 3040 wrote to memory of 1580	3040	mstsc.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1220
- C:\Users\Admin\AppData\Local\Temp\Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
  "C:\Users\Admin\AppData\Local\Temp\Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2668
- - C:\Users\Admin\AppData\Local\Temp\Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
    "C:\Users\Admin\AppData\Local\Temp\Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2632
- 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:3040
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:1580

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/1220-20-0x0000000003AC0000-0x0000000003BC0000-memory.dmp

Filesize
1024KB

Download
memory/1220-26-0x0000000006EC0000-0x0000000007056000-memory.dmp

Filesize
1.6MB

Download
memory/1220-21-0x0000000006EC0000-0x0000000007056000-memory.dmp

Filesize
1.6MB

Download
memory/2632-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2632-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2632-19-0x0000000000290000-0x00000000002A5000-memory.dmp

Filesize
84KB

Download
memory/2632-16-0x0000000000BA0000-0x0000000000EA3000-memory.dmp

Filesize
3.0MB

Download
memory/2632-9-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2632-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2632-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2668-15-0x00000000747C0000-0x0000000074EAE000-memory.dmp

Filesize
6.9MB

Download
memory/2668-7-0x0000000001FB0000-0x0000000001FE6000-memory.dmp

Filesize
216KB

Download
memory/2668-4-0x00000000747CE000-0x00000000747CF000-memory.dmp

Filesize
4KB

Download
memory/2668-6-0x0000000005150000-0x00000000051AC000-memory.dmp

Filesize
368KB

Download
memory/2668-5-0x00000000747C0000-0x0000000074EAE000-memory.dmp

Filesize
6.9MB

Download
memory/2668-0-0x00000000747CE000-0x00000000747CF000-memory.dmp

Filesize
4KB

Download
memory/2668-3-0x0000000000600000-0x000000000060C000-memory.dmp

Filesize
48KB

Download
memory/2668-2-0x00000000747C0000-0x0000000074EAE000-memory.dmp

Filesize
6.9MB

Download
memory/2668-1-0x0000000000810000-0x00000000008E8000-memory.dmp

Filesize
864KB

Download
memory/3040-22-0x00000000008C0000-0x00000000009C4000-memory.dmp

Filesize
1.0MB

Download
memory/3040-24-0x00000000008C0000-0x00000000009C4000-memory.dmp

Filesize
1.0MB

Download
memory/3040-25-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

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