formbook | 801ced2d6661e6ad1fe63da93f7a3700c36bd70b47cae2bfaf3c7b67c33513ec

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 4 IoCs

rat

resource	yara_rule
behavioral2/memory/4392-12-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4392-17-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4392-21-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1944-26-0x0000000000FC0000-0x0000000000FEF000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1520 set thread context of 4392	1520	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	92
PID 4392 set thread context of 3532	4392	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	56
PID 4392 set thread context of 3532	4392	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	56
PID 1944 set thread context of 3532	1944	wscript.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	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wscript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 50 IoCs

pid	Process
1520	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
1520	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
4392	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
4392	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
4392	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
4392	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
4392	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
4392	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe
1944	wscript.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
4392	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
4392	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
4392	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
4392	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
1944	wscript.exe
1944	wscript.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1520	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
Token: SeDebugPrivilege	4392	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe
Token: SeDebugPrivilege	1944	wscript.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1520 wrote to memory of 1056	1520	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	91
PID 1520 wrote to memory of 1056	1520	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	91
PID 1520 wrote to memory of 1056	1520	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	91
PID 1520 wrote to memory of 4392	1520	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	92
PID 1520 wrote to memory of 4392	1520	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	92
PID 1520 wrote to memory of 4392	1520	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	92
PID 1520 wrote to memory of 4392	1520	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	92
PID 1520 wrote to memory of 4392	1520	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	92
PID 1520 wrote to memory of 4392	1520	Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe	92
PID 3532 wrote to memory of 1944	3532	Explorer.EXE	93
PID 3532 wrote to memory of 1944	3532	Explorer.EXE	93
PID 3532 wrote to memory of 1944	3532	Explorer.EXE	93
PID 1944 wrote to memory of 3288	1944	wscript.exe	94
PID 1944 wrote to memory of 3288	1944	wscript.exe	94
PID 1944 wrote to memory of 3288	1944	wscript.exe	94

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3532
- 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 behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1520
- - 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⤵
    PID:1056
- - 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:4392
- C:\Windows\SysWOW64\wscript.exe
  "C:\Windows\SysWOW64\wscript.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:1944
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Estimates (Korea Zinc Co., Ltd. Onsan Refinery) 275-016.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3288

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/1520-14-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/1520-1-0x00000000000C0000-0x0000000000198000-memory.dmp

Filesize
864KB

Download
memory/1520-2-0x00000000050A0000-0x0000000005644000-memory.dmp

Filesize
5.6MB

Download
memory/1520-3-0x0000000004BD0000-0x0000000004C62000-memory.dmp

Filesize
584KB

Download
memory/1520-4-0x0000000004BA0000-0x0000000004BAA000-memory.dmp

Filesize
40KB

Download
memory/1520-5-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/1520-6-0x0000000005060000-0x000000000506C000-memory.dmp

Filesize
48KB

Download
memory/1520-7-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/1520-8-0x0000000074A70000-0x0000000075220000-memory.dmp

Filesize
7.7MB

Download
memory/1520-9-0x00000000068C0000-0x000000000695C000-memory.dmp

Filesize
624KB

Download
memory/1520-10-0x0000000006A10000-0x0000000006A6C000-memory.dmp

Filesize
368KB

Download
memory/1520-11-0x0000000006A70000-0x0000000006AA6000-memory.dmp

Filesize
216KB

Download
memory/1520-0-0x0000000074A7E000-0x0000000074A7F000-memory.dmp

Filesize
4KB

Download
memory/1944-24-0x0000000000C60000-0x0000000000C87000-memory.dmp

Filesize
156KB

Download
memory/1944-25-0x0000000000C60000-0x0000000000C87000-memory.dmp

Filesize
156KB

Download
memory/1944-26-0x0000000000FC0000-0x0000000000FEF000-memory.dmp

Filesize
188KB

Download
memory/3532-19-0x0000000008630000-0x000000000879A000-memory.dmp

Filesize
1.4MB

Download
memory/3532-23-0x0000000002870000-0x0000000002928000-memory.dmp

Filesize
736KB

Download
memory/3532-27-0x0000000002870000-0x0000000002928000-memory.dmp

Filesize
736KB

Download
memory/3532-30-0x00000000087A0000-0x0000000008911000-memory.dmp

Filesize
1.4MB

Download
memory/3532-32-0x00000000087A0000-0x0000000008911000-memory.dmp

Filesize
1.4MB

Download
memory/3532-33-0x00000000087A0000-0x0000000008911000-memory.dmp

Filesize
1.4MB

Download
memory/4392-15-0x0000000001330000-0x000000000167A000-memory.dmp

Filesize
3.3MB

Download
memory/4392-22-0x0000000001230000-0x0000000001245000-memory.dmp

Filesize
84KB

Download
memory/4392-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4392-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4392-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4392-18-0x0000000000EB0000-0x0000000000EC5000-memory.dmp

Filesize
84KB

Download

Analysis

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