formbook | 388292015e4c2d075b935a8299d99335d957e3ad5134a33f28c4dc7f5e3687c5

Resubmissions

28/03/2025, 01:18

250328-bn2gcszyfy 10

21/02/2022, 14:26

220221-rrw9taaed3 10

Analysis

max time kernel
150s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2025, 01:18

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Report Analysis Logs

General

Target

_BUSAN_HOCHIMINH_FEB.25.exe
Size

738KB
MD5

08b4042d2a89ebcff8537ba458295e48
SHA1

91e3fd4718786c523620c31465232113580ea477
SHA256

388292015e4c2d075b935a8299d99335d957e3ad5134a33f28c4dc7f5e3687c5
SHA512

5be0e94d68f8d0599c9323bb4c03635a0e000ff541b9924f6b83eba8adeda55c9528c818093f690249f51cd1976389c77d841e7f373fb1b5d362ba57ea36a222
SSDEEP

12288:dwRl4Zby0chFFQWNd9M/VqnM2GQkTtZrD1fNABd0ioEXZm33h:elIbHchFv6/6TGQk7Ly0aJs

Score

10^/10

formbook a04s discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

a04s

Decoy

lovelyveganfoods.com

wahidi.net

hwcstl.com

psnews.today

depress-elastic.com

r3mixlogistics.com

crimeawartoken.com

changethewayyouseegreen.com

mfa-azubi.com

maximizeprofit.store

alternativesclimat.net

turkcellsuperonline.xyz

extractword.com

radiotec-solutions.com

flawlesscity.com

schatzbenifits.com

gymzf.xyz

runpa.site

cryptocdes.biz

harryhoppe.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/3136-21-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3136-42-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3136-74-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1868-77-0x0000000000880000-0x00000000008AF000-memory.dmp	formbook

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4060	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-446031748-3036493239-2009529691-1000\Control Panel\International\Geo\Nation	_BUSAN_HOCHIMINH_FEB.25.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 6000 set thread context of 3136	6000	_BUSAN_HOCHIMINH_FEB.25.exe	106
PID 3136 set thread context of 3504	3136	vbc.exe	56
PID 3136 set thread context of 3504	3136	vbc.exe	56
PID 1868 set thread context of 3504	1868	colorcpl.exe	56

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	colorcpl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	_BUSAN_HOCHIMINH_FEB.25.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3272	schtasks.exe

Suspicious behavior: EnumeratesProcesses 51 IoCs

pid	Process
6000	_BUSAN_HOCHIMINH_FEB.25.exe
6000	_BUSAN_HOCHIMINH_FEB.25.exe
6000	_BUSAN_HOCHIMINH_FEB.25.exe
4060	powershell.exe
3136	vbc.exe
3136	vbc.exe
4060	powershell.exe
3136	vbc.exe
3136	vbc.exe
3136	vbc.exe
3136	vbc.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe
1868	colorcpl.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3504	Explorer.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
3136	vbc.exe
3136	vbc.exe
3136	vbc.exe
3136	vbc.exe
1868	colorcpl.exe
1868	colorcpl.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	6000	_BUSAN_HOCHIMINH_FEB.25.exe
Token: SeDebugPrivilege	4060	powershell.exe
Token: SeDebugPrivilege	3136	vbc.exe
Token: SeShutdownPrivilege	3504	Explorer.EXE
Token: SeCreatePagefilePrivilege	3504	Explorer.EXE
Token: SeDebugPrivilege	1868	colorcpl.exe
Token: SeShutdownPrivilege	3504	Explorer.EXE
Token: SeCreatePagefilePrivilege	3504	Explorer.EXE
Token: SeShutdownPrivilege	3504	Explorer.EXE
Token: SeCreatePagefilePrivilege	3504	Explorer.EXE
Token: SeShutdownPrivilege	3504	Explorer.EXE
Token: SeCreatePagefilePrivilege	3504	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3504	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 6000 wrote to memory of 4060	6000	_BUSAN_HOCHIMINH_FEB.25.exe	102
PID 6000 wrote to memory of 4060	6000	_BUSAN_HOCHIMINH_FEB.25.exe	102
PID 6000 wrote to memory of 4060	6000	_BUSAN_HOCHIMINH_FEB.25.exe	102
PID 6000 wrote to memory of 3272	6000	_BUSAN_HOCHIMINH_FEB.25.exe	104
PID 6000 wrote to memory of 3272	6000	_BUSAN_HOCHIMINH_FEB.25.exe	104
PID 6000 wrote to memory of 3272	6000	_BUSAN_HOCHIMINH_FEB.25.exe	104
PID 6000 wrote to memory of 3136	6000	_BUSAN_HOCHIMINH_FEB.25.exe	106
PID 6000 wrote to memory of 3136	6000	_BUSAN_HOCHIMINH_FEB.25.exe	106
PID 6000 wrote to memory of 3136	6000	_BUSAN_HOCHIMINH_FEB.25.exe	106
PID 6000 wrote to memory of 3136	6000	_BUSAN_HOCHIMINH_FEB.25.exe	106
PID 6000 wrote to memory of 3136	6000	_BUSAN_HOCHIMINH_FEB.25.exe	106
PID 6000 wrote to memory of 3136	6000	_BUSAN_HOCHIMINH_FEB.25.exe	106
PID 3504 wrote to memory of 1868	3504	Explorer.EXE	110
PID 3504 wrote to memory of 1868	3504	Explorer.EXE	110
PID 3504 wrote to memory of 1868	3504	Explorer.EXE	110
PID 1868 wrote to memory of 5032	1868	colorcpl.exe	111
PID 1868 wrote to memory of 5032	1868	colorcpl.exe	111
PID 1868 wrote to memory of 5032	1868	colorcpl.exe	111

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3504
- C:\Users\Admin\AppData\Local\Temp\_BUSAN_HOCHIMINH_FEB.25.exe
  "C:\Users\Admin\AppData\Local\Temp\_BUSAN_HOCHIMINH_FEB.25.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:6000
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YtGUemuxgzC.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4060
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YtGUemuxgzC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE8CA.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3272
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:3136
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:404
- C:\Windows\SysWOW64\colorcpl.exe
  "C:\Windows\SysWOW64\colorcpl.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:1868
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cqfvfows.zvp.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE8CA.tmp

Filesize
1KB

MD5
b060a2275600a26bd623a4c321e1b8b3

SHA1
941ed7cf1308529c3eb14cc12e79ddbf31a5b539

SHA256
7f2afbde85c4193af3d9bf0fb2256be1d900e7009e5ea6ff88b4ffa5a168c966

SHA512
b6b2f611d8bc7aad85483f731cef1ebd955ce11d3f640e513342d825b009c33b05339c1d9af2158acc7fdc4b40d6acf1849c1b7b99e168fa9cf0108b6fd9a325

Download Submit
memory/1868-76-0x0000000000BD0000-0x0000000000BE9000-memory.dmp

Filesize
100KB

Download
memory/1868-77-0x0000000000880000-0x00000000008AF000-memory.dmp

Filesize
188KB

Download
memory/3136-43-0x0000000001370000-0x0000000001385000-memory.dmp

Filesize
84KB

Download
memory/3136-42-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3136-38-0x00000000013C0000-0x000000000170A000-memory.dmp

Filesize
3.3MB

Download
memory/3136-74-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3136-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3504-94-0x0000000000A60000-0x0000000000A70000-memory.dmp

Filesize
64KB

Download
memory/3504-95-0x0000000000A60000-0x0000000000A70000-memory.dmp

Filesize
64KB

Download
memory/3504-89-0x0000000000A60000-0x0000000000A70000-memory.dmp

Filesize
64KB

Download
memory/3504-88-0x0000000000A60000-0x0000000000A70000-memory.dmp

Filesize
64KB

Download
memory/3504-93-0x0000000000A60000-0x0000000000A70000-memory.dmp

Filesize
64KB

Download
memory/3504-87-0x0000000000A60000-0x0000000000A70000-memory.dmp

Filesize
64KB

Download
memory/3504-86-0x0000000000A60000-0x0000000000A70000-memory.dmp

Filesize
64KB

Download
memory/3504-85-0x0000000000A60000-0x0000000000A70000-memory.dmp

Filesize
64KB

Download
memory/3504-84-0x0000000000A60000-0x0000000000A70000-memory.dmp

Filesize
64KB

Download
memory/3504-90-0x0000000000A60000-0x0000000000A70000-memory.dmp

Filesize
64KB

Download
memory/3504-79-0x0000000008740000-0x0000000008896000-memory.dmp

Filesize
1.3MB

Download
memory/3504-44-0x0000000009200000-0x0000000009383000-memory.dmp

Filesize
1.5MB

Download
memory/3504-92-0x0000000000A60000-0x0000000000A70000-memory.dmp

Filesize
64KB

Download
memory/3504-91-0x0000000000A60000-0x0000000000A70000-memory.dmp

Filesize
64KB

Download
memory/3504-75-0x0000000009200000-0x0000000009383000-memory.dmp

Filesize
1.5MB

Download
memory/3504-96-0x0000000000A60000-0x0000000000A70000-memory.dmp

Filesize
64KB

Download
memory/3504-97-0x0000000000A60000-0x0000000000A70000-memory.dmp

Filesize
64KB

Download
memory/3504-98-0x0000000000A60000-0x0000000000A70000-memory.dmp

Filesize
64KB

Download
memory/3504-99-0x0000000000A60000-0x0000000000A70000-memory.dmp

Filesize
64KB

Download
memory/4060-22-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/4060-25-0x0000000004F00000-0x0000000004F22000-memory.dmp

Filesize
136KB

Download
memory/4060-39-0x0000000005CB0000-0x0000000005CCE000-memory.dmp

Filesize
120KB

Download
memory/4060-45-0x000000007FCC0000-0x000000007FCD0000-memory.dmp

Filesize
64KB

Download
memory/4060-47-0x0000000070CF0000-0x0000000070D3C000-memory.dmp

Filesize
304KB

Download
memory/4060-46-0x0000000006CD0000-0x0000000006D02000-memory.dmp

Filesize
200KB

Download
memory/4060-58-0x0000000006170000-0x000000000618E000-memory.dmp

Filesize
120KB

Download
memory/4060-57-0x0000000004980000-0x0000000004990000-memory.dmp

Filesize
64KB

Download
memory/4060-59-0x0000000006F10000-0x0000000006FB3000-memory.dmp

Filesize
652KB

Download
memory/4060-61-0x0000000006FE0000-0x0000000006FFA000-memory.dmp

Filesize
104KB

Download
memory/4060-60-0x0000000007640000-0x0000000007CBA000-memory.dmp

Filesize
6.5MB

Download
memory/4060-62-0x0000000007050000-0x000000000705A000-memory.dmp

Filesize
40KB

Download
memory/4060-63-0x0000000007260000-0x00000000072F6000-memory.dmp

Filesize
600KB

Download
memory/4060-64-0x00000000071E0000-0x00000000071F1000-memory.dmp

Filesize
68KB

Download
memory/4060-65-0x0000000007210000-0x000000000721E000-memory.dmp

Filesize
56KB

Download
memory/4060-66-0x0000000007220000-0x0000000007234000-memory.dmp

Filesize
80KB

Download
memory/4060-67-0x0000000007320000-0x000000000733A000-memory.dmp

Filesize
104KB

Download
memory/4060-68-0x0000000007300000-0x0000000007308000-memory.dmp

Filesize
32KB

Download
memory/4060-69-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/4060-72-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/4060-37-0x00000000057D0000-0x0000000005B24000-memory.dmp

Filesize
3.3MB

Download
memory/4060-40-0x0000000006240000-0x000000000628C000-memory.dmp

Filesize
304KB

Download
memory/4060-26-0x00000000055F0000-0x0000000005656000-memory.dmp

Filesize
408KB

Download
memory/4060-29-0x0000000005660000-0x00000000056C6000-memory.dmp

Filesize
408KB

Download
memory/4060-15-0x0000000000B70000-0x0000000000BA6000-memory.dmp

Filesize
216KB

Download
memory/4060-17-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/4060-18-0x0000000004FC0000-0x00000000055E8000-memory.dmp

Filesize
6.2MB

Download
memory/4060-19-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/6000-7-0x000000007480E000-0x000000007480F000-memory.dmp

Filesize
4KB

Download
memory/6000-0-0x000000007480E000-0x000000007480F000-memory.dmp

Filesize
4KB

Download
memory/6000-24-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/6000-10-0x0000000006750000-0x0000000006804000-memory.dmp

Filesize
720KB

Download
memory/6000-9-0x0000000006430000-0x00000000064CC000-memory.dmp

Filesize
624KB

Download
memory/6000-8-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/6000-20-0x0000000006B00000-0x0000000006B34000-memory.dmp

Filesize
208KB

Download
memory/6000-6-0x0000000005040000-0x000000000504E000-memory.dmp

Filesize
56KB

Download
memory/6000-4-0x0000000004EC0000-0x0000000004ECA000-memory.dmp

Filesize
40KB

Download
memory/6000-5-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/6000-3-0x0000000004F30000-0x0000000004FC2000-memory.dmp

Filesize
584KB

Download
memory/6000-2-0x00000000054E0000-0x0000000005A84000-memory.dmp

Filesize
5.6MB

Download
memory/6000-1-0x0000000000590000-0x000000000064E000-memory.dmp

Filesize
760KB

Download