formbook | 272872a41e4e0ae720f6f61e50320720cf0313fe65d4c039334ed6c0cb7f37b0

General

Target

PO-230102_May 2023.exe
Size

222KB
MD5

41b41296821338a634d99d5b5c749ec1
SHA1

747470c76d47d50eaaa891edcc2f17b22b07d1c9
SHA256

272872a41e4e0ae720f6f61e50320720cf0313fe65d4c039334ed6c0cb7f37b0
SHA512

7e6e6892661051c9135ca042bc0af85dbbee366080ac326893a62666c4f54401bf1111b1c60c300f3a29b9ad26dfd71848a622215917f739d29ad882451e5ed0
SSDEEP

3072:d0gHHDGWvgDE4u+gCGHjEmELWQ88ffVls4:WkDBuEawAWE3Vls

Score

10^/10

formbook g3th rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

g3th

Decoy

casemierlawncare.com

715harrison.com

laiwudj.com

jhy6id3bgsu.cfd

gewnaj.xyz

hullo.social

animejoyy.com

florenceodd.click

accountingassociatesil.com

cxuu39.shop

isabelladowns.com

checkstart.net

b2bmails.ru

wehantz.com

thejjwhyte.com

jerusalemfoundationsusa.com

newagreement19.com

findel.xyz

czanniversaryring.com

ape5n.com

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral1/memory/1948-63-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1948-66-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1748-71-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook
behavioral1/memory/1748-73-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1232 set thread context of 1948	1232	PO-230102_May 2023.exe	28
PID 1948 set thread context of 1196	1948	MSBuild.exe	14
PID 1748 set thread context of 1196	1748	chkdsk.exe	14

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 26 IoCs

pid	Process
1948	MSBuild.exe
1948	MSBuild.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe
1748	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1196	Explorer.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
1948	MSBuild.exe
1948	MSBuild.exe
1948	MSBuild.exe
1748	chkdsk.exe
1748	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1232	PO-230102_May 2023.exe
Token: SeDebugPrivilege	1948	MSBuild.exe
Token: SeDebugPrivilege	1748	chkdsk.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
1196	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1232 wrote to memory of 1948	1232	PO-230102_May 2023.exe	28
PID 1232 wrote to memory of 1948	1232	PO-230102_May 2023.exe	28
PID 1232 wrote to memory of 1948	1232	PO-230102_May 2023.exe	28
PID 1232 wrote to memory of 1948	1232	PO-230102_May 2023.exe	28
PID 1232 wrote to memory of 1948	1232	PO-230102_May 2023.exe	28
PID 1232 wrote to memory of 1948	1232	PO-230102_May 2023.exe	28
PID 1232 wrote to memory of 1948	1232	PO-230102_May 2023.exe	28
PID 1196 wrote to memory of 1748	1196	Explorer.EXE	29
PID 1196 wrote to memory of 1748	1196	Explorer.EXE	29
PID 1196 wrote to memory of 1748	1196	Explorer.EXE	29
PID 1196 wrote to memory of 1748	1196	Explorer.EXE	29
PID 1748 wrote to memory of 1856	1748	chkdsk.exe	30
PID 1748 wrote to memory of 1856	1748	chkdsk.exe	30
PID 1748 wrote to memory of 1856	1748	chkdsk.exe	30
PID 1748 wrote to memory of 1856	1748	chkdsk.exe	30

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Users\Admin\AppData\Local\Temp\PO-230102_May 2023.exe
  "C:\Users\Admin\AppData\Local\Temp\PO-230102_May 2023.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1232
- - 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:1948
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1748
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
    3⤵
    PID:1856

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1196-80-0x0000000004E30000-0x0000000004F11000-memory.dmp

Filesize
900KB

Download
memory/1196-68-0x0000000004D70000-0x0000000004E24000-memory.dmp

Filesize
720KB

Download
memory/1196-77-0x0000000004E30000-0x0000000004F11000-memory.dmp

Filesize
900KB

Download
memory/1196-78-0x0000000004E30000-0x0000000004F11000-memory.dmp

Filesize
900KB

Download
memory/1232-57-0x0000000000430000-0x0000000000458000-memory.dmp

Filesize
160KB

Download
memory/1232-54-0x0000000000B10000-0x0000000000B4E000-memory.dmp

Filesize
248KB

Download
memory/1232-58-0x0000000005880000-0x0000000005912000-memory.dmp

Filesize
584KB

Download
memory/1232-56-0x0000000006060000-0x0000000006168000-memory.dmp

Filesize
1.0MB

Download
memory/1232-55-0x0000000000AB0000-0x0000000000AF0000-memory.dmp

Filesize
256KB

Download
memory/1748-71-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/1748-76-0x0000000001E60000-0x0000000001EF4000-memory.dmp

Filesize
592KB

Download
memory/1748-73-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/1748-72-0x0000000002090000-0x0000000002393000-memory.dmp

Filesize
3.0MB

Download
memory/1748-69-0x0000000000490000-0x0000000000497000-memory.dmp

Filesize
28KB

Download
memory/1748-70-0x0000000000490000-0x0000000000497000-memory.dmp

Filesize
28KB

Download
memory/1948-60-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1948-66-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1948-67-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/1948-65-0x0000000000AA0000-0x0000000000DA3000-memory.dmp

Filesize
3.0MB

Download
memory/1948-63-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1948-62-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1948-61-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

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