formbook | 8bb4cdfefd9caae6291347842048859a0f44a3cd6a3313004506f939541ce0a3

General

Target

SKM_C221200706052800n.exe
Size

263KB
MD5

428a6aceb56f682b4b95685dd56f805f
SHA1

20549710f386a134b7fac0db3dbe4bb1118908f1
SHA256

8bb4cdfefd9caae6291347842048859a0f44a3cd6a3313004506f939541ce0a3
SHA512

1a65bba17b0730bc6a7453fabb55367a06a4ff247944f5621c9137c3266ffb6853a6d3f0af5432751c1b22d990b9a5af2208afaae2cf19118f2f9b22414e33c6

Score

10^/10

formbook xloader loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.destinny.com/s9zh/

Decoy

paintedinafrica.com

electrumfix.download

edlange.com

tqiawy.xyz

satiscenter.xyz

nc-affiliates.com

agencybuilderforum.com

testabcde.net

venisseturf.net

rubenvdsande.com

nzmatrimony.com

mdthriftsandflips.com

virtualfxstudio.com

communityinsuranceut.com

qqbokep.com

copeva.net

bookedupdaily.com

houstongrowmyairway.com

fortunapublishing.com

empireplumbingandheating.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1332-4-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1332-5-0x000000000041D060-mapping.dmp	xloader
behavioral1/memory/888-13-0x0000000000090000-0x00000000000B9000-memory.dmp	xloader

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 3 IoCs

Processes:

SKM_C221200706052800n.exevbc.execmstp.exe

description	pid	process	target process
PID 1684 set thread context of 1332	1684	SKM_C221200706052800n.exe	vbc.exe
PID 1332 set thread context of 1276	1332	vbc.exe	Explorer.EXE
PID 888 set thread context of 1276	888	cmstp.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 32 IoCs

Processes:

SKM_C221200706052800n.exevbc.execmstp.exe

pid	process
1684	SKM_C221200706052800n.exe
1684	SKM_C221200706052800n.exe
1684	SKM_C221200706052800n.exe
1332	vbc.exe
1332	vbc.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe
888	cmstp.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.execmstp.exe

pid process

1332 vbc.exe
1332 vbc.exe
1332 vbc.exe
888 cmstp.exe
888 cmstp.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

SKM_C221200706052800n.exevbc.execmstp.exe

description pid process

Token: SeDebugPrivilege 1684 SKM_C221200706052800n.exe
Token: SeDebugPrivilege 1332 vbc.exe
Token: SeDebugPrivilege 888 cmstp.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1276 Explorer.EXE
1276 Explorer.EXE
1276 Explorer.EXE
1276 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1276 Explorer.EXE
1276 Explorer.EXE
1276 Explorer.EXE
1276 Explorer.EXE

pid	process
1332	vbc.exe
1332	vbc.exe
1332	vbc.exe
888	cmstp.exe
888	cmstp.exe

description	pid	process
Token: SeDebugPrivilege	1684	SKM_C221200706052800n.exe
Token: SeDebugPrivilege	1332	vbc.exe
Token: SeDebugPrivilege	888	cmstp.exe

pid	process
1276	Explorer.EXE
1276	Explorer.EXE
1276	Explorer.EXE
1276	Explorer.EXE

pid	process
1276	Explorer.EXE
1276	Explorer.EXE
1276	Explorer.EXE
1276	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

SKM_C221200706052800n.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 1684 wrote to memory of 1332	1684	SKM_C221200706052800n.exe	vbc.exe
PID 1684 wrote to memory of 1332	1684	SKM_C221200706052800n.exe	vbc.exe
PID 1684 wrote to memory of 1332	1684	SKM_C221200706052800n.exe	vbc.exe
PID 1684 wrote to memory of 1332	1684	SKM_C221200706052800n.exe	vbc.exe
PID 1684 wrote to memory of 1332	1684	SKM_C221200706052800n.exe	vbc.exe
PID 1684 wrote to memory of 1332	1684	SKM_C221200706052800n.exe	vbc.exe
PID 1684 wrote to memory of 1332	1684	SKM_C221200706052800n.exe	vbc.exe
PID 1276 wrote to memory of 888	1276	Explorer.EXE	cmstp.exe
PID 1276 wrote to memory of 888	1276	Explorer.EXE	cmstp.exe
PID 1276 wrote to memory of 888	1276	Explorer.EXE	cmstp.exe
PID 1276 wrote to memory of 888	1276	Explorer.EXE	cmstp.exe
PID 1276 wrote to memory of 888	1276	Explorer.EXE	cmstp.exe
PID 1276 wrote to memory of 888	1276	Explorer.EXE	cmstp.exe
PID 1276 wrote to memory of 888	1276	Explorer.EXE	cmstp.exe
PID 888 wrote to memory of 1540	888	cmstp.exe	cmd.exe
PID 888 wrote to memory of 1540	888	cmstp.exe	cmd.exe
PID 888 wrote to memory of 1540	888	cmstp.exe	cmd.exe
PID 888 wrote to memory of 1540	888	cmstp.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1276

C:\Users\Admin\AppData\Local\Temp\SKM_C221200706052800n.exe
"C:\Users\Admin\AppData\Local\Temp\SKM_C221200706052800n.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1684

C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1332

C:\Windows\SysWOW64\cmstp.exe
"C:\Windows\SysWOW64\cmstp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:888

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"
3⤵
PID:1540

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/888-10-0x0000000000000000-mapping.dmp

Download
memory/888-16-0x0000000000A30000-0x0000000000AC0000-memory.dmp

Filesize
576KB

Download
memory/888-15-0x0000000002290000-0x0000000002593000-memory.dmp

Filesize
3.0MB

Download
memory/888-13-0x0000000000090000-0x00000000000B9000-memory.dmp

Filesize
164KB

Download
memory/888-12-0x0000000000E70000-0x0000000000E88000-memory.dmp

Filesize
96KB

Download
memory/1276-8-0x0000000006BD0000-0x0000000006D25000-memory.dmp

Filesize
1.3MB

Download
memory/1276-17-0x0000000004B60000-0x0000000004C27000-memory.dmp

Filesize
796KB

Download
memory/1332-9-0x0000000000860000-0x0000000000B63000-memory.dmp

Filesize
3.0MB

Download
memory/1332-7-0x00000000002C0000-0x00000000002D1000-memory.dmp

Filesize
68KB

Download
memory/1332-5-0x000000000041D060-mapping.dmp

Download
memory/1332-4-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1540-14-0x0000000000000000-mapping.dmp

Download
memory/1684-2-0x00000000756A1000-0x00000000756A3000-memory.dmp

Filesize
8KB

Download
memory/1684-3-0x0000000000430000-0x0000000000431000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads