formbook | f3b163231a156797f336842bd4e6fce358ce875b7a06430c92d777eb84186f46

General

Target

po456789__img.exe
Size

403KB
MD5

8205a489fc508497b86443d6253e294b
SHA1

45e9e0b6dc9fce4583753e3cded6552844de0695
SHA256

6f4b543bdd425e2cb35fcc06f79dfac486985ae0d84133c34e0fd01b3a2c22bb
SHA512

b5099a16e8ad338574e6b5f5b57c0b160ff12fa75efbafe8e06dfa3de23611c54edddd9ef9e2fe30a424df733a93eafee452bdf7f5b344bb9629dff15353cd08

Score

10^/10

formbook duj evasion rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

duj

Decoy

deapink.pink

tkmdz.com

nytzshicai.com

photos-identite-dijon.com

ekanun.net

xn--fiqy4bxl57l9sag6f6wb.ink

slivercat5.com

ai-ethics.net

510ns.com

inotherways.com

ridesharesettelment.com

zjxiangnong.com

aoraessentials.com

sheap-list.com

heshengqy.com

experts-comptables-paris-17.com

parissummerolympics2024.info

gtyx88.com

devopsonjob.com

vodacred.com

Signatures

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

Formbook Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4112-132-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral2/memory/4888-139-0x00000000008F0000-0x000000000091D000-memory.dmp	formbook

Looks for VirtualBox Guest Additions in registry 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497
Looks for VMWare Tools registry key 2 TTPs
evasion

Query Registry
T1012

Virtualization/Sandbox Evasion
T1497

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

po456789__img.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	po456789__img.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	po456789__img.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

po456789__img.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	po456789__img.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	po456789__img.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

po456789__img.exeMSBuild.exewlanext.exe

description	pid	process	target process
PID 1148 set thread context of 4112	1148	po456789__img.exe	MSBuild.exe
PID 4112 set thread context of 648	4112	MSBuild.exe	Explorer.EXE
PID 4888 set thread context of 648	4888	wlanext.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 42 IoCs

Processes:

MSBuild.exewlanext.exe

pid	process
4112	MSBuild.exe
4112	MSBuild.exe
4112	MSBuild.exe
4112	MSBuild.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe
4888	wlanext.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

648 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

MSBuild.exewlanext.exe

pid process

4112 MSBuild.exe
4112 MSBuild.exe
4112 MSBuild.exe
4888 wlanext.exe
4888 wlanext.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

po456789__img.exeMSBuild.exewlanext.exe

description pid process

Token: SeDebugPrivilege 1148 po456789__img.exe
Token: SeDebugPrivilege 4112 MSBuild.exe
Token: SeDebugPrivilege 4888 wlanext.exe

pid	process
648	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1148	po456789__img.exe
Token: SeDebugPrivilege	4112	MSBuild.exe
Token: SeDebugPrivilege	4888	wlanext.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

po456789__img.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 1148 wrote to memory of 4112	1148	po456789__img.exe	MSBuild.exe
PID 1148 wrote to memory of 4112	1148	po456789__img.exe	MSBuild.exe
PID 1148 wrote to memory of 4112	1148	po456789__img.exe	MSBuild.exe
PID 1148 wrote to memory of 4112	1148	po456789__img.exe	MSBuild.exe
PID 1148 wrote to memory of 4112	1148	po456789__img.exe	MSBuild.exe
PID 1148 wrote to memory of 4112	1148	po456789__img.exe	MSBuild.exe
PID 648 wrote to memory of 4888	648	Explorer.EXE	wlanext.exe
PID 648 wrote to memory of 4888	648	Explorer.EXE	wlanext.exe
PID 648 wrote to memory of 4888	648	Explorer.EXE	wlanext.exe
PID 4888 wrote to memory of 1984	4888	wlanext.exe	cmd.exe
PID 4888 wrote to memory of 1984	4888	wlanext.exe	cmd.exe
PID 4888 wrote to memory of 1984	4888	wlanext.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:648

C:\Users\Admin\AppData\Local\Temp\po456789__img.exe
"C:\Users\Admin\AppData\Local\Temp\po456789__img.exe"
2⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1148

C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4112

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4888

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"
3⤵
PID:1984

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

T1497

Credential Access

Discovery

Query Registry

4

T1012

Virtualization/Sandbox Evasion

2

T1497

System Information Discovery

2

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/648-136-0x0000000002490000-0x0000000002619000-memory.dmp

Filesize
1.5MB

Download
memory/648-143-0x0000000007D60000-0x0000000007EE0000-memory.dmp

Filesize
1.5MB

Download
memory/1148-130-0x0000000074890000-0x0000000074E41000-memory.dmp

Filesize
5.7MB

Download
memory/1984-140-0x0000000000000000-mapping.dmp

Download
memory/4112-131-0x0000000000000000-mapping.dmp

Download
memory/4112-132-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/4112-134-0x0000000000F80000-0x00000000012CA000-memory.dmp

Filesize
3.3MB

Download
memory/4112-135-0x0000000000A90000-0x0000000000AA4000-memory.dmp

Filesize
80KB

Download
memory/4888-137-0x0000000000000000-mapping.dmp

Download
memory/4888-141-0x0000000001140000-0x000000000148A000-memory.dmp

Filesize
3.3MB

Download
memory/4888-139-0x00000000008F0000-0x000000000091D000-memory.dmp

Filesize
180KB

Download
memory/4888-142-0x0000000000EE0000-0x0000000000F73000-memory.dmp

Filesize
588KB

Download
memory/4888-138-0x0000000000CC0000-0x0000000000CD7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads