formbook | d9ee3d4f7d340ba53d7d252addd31c0666c926663be58fa8e04ee40a4b7a7fdb

General

Target

PO.exe
Size

260KB
MD5

dcc82f6d02352ba09401b5e5903fc2c9
SHA1

1fc8ead283ee92f4f1c7b3638d6cb91a9a2a6a8e
SHA256

c96178775d7f8dd8b06a4e59aad0367f36abc11680081acfcc2b446fb0ee28b1
SHA512

714003eb53f9a2d3198dbcad9d666e2d5380415f3d5c4ba5f8129cfe585fd21453f6720995ca536151fdd7787dbef3bb5bc8131865b9b8905da3311bf9bae541

Score

10^/10

formbook w6ya rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

w6ya

C2

http://www.truth-capturemachine.com/w6ya/

Decoy

auden-audio.com

zombieodyssey.com

hdpthg.com

toddtechnical.com

njsdgz.com

yieldfarm.world

guardsveirfynews.net

atmamandir.info

eskisehirtostcusu.online

arrozz.net

v99king.win

jaxonboxing.com

morganevans.net

syandeg.com

valleyofplants.com

corsosportorico.com

tak.support

blacktgpc.com

herdpetshop.com

iifkvhns.xyz

Signatures

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

Formbook Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2180-115-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2180-116-0x000000000041F150-mapping.dmp	formbook
behavioral2/memory/2180-121-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1064-127-0x0000000005290000-0x00000000052BF000-memory.dmp	formbook

Loads dropped DLL 1 IoCs

Processes:

PO.exe

pid process

3008 PO.exe

pid	process
3008	PO.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

PO.exePO.exechkdsk.exe

description	pid	process	target process
PID 3008 set thread context of 2180	3008	PO.exe	PO.exe
PID 2180 set thread context of 3020	2180	PO.exe	Explorer.EXE
PID 2180 set thread context of 3020	2180	PO.exe	Explorer.EXE
PID 1064 set thread context of 3020	1064	chkdsk.exe	Explorer.EXE

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

System Information Discovery
T1082
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 58 IoCs

Processes:

PO.exechkdsk.exe

pid	process
2180	PO.exe
2180	PO.exe
2180	PO.exe
2180	PO.exe
2180	PO.exe
2180	PO.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe
1064	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3020 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

PO.exechkdsk.exe

pid process

2180 PO.exe
2180 PO.exe
2180 PO.exe
2180 PO.exe
1064 chkdsk.exe
1064 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 2180 PO.exe
Token: SeDebugPrivilege 1064 chkdsk.exe
Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid process

3020 Explorer.EXE

pid	process
3020	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	2180	PO.exe
Token: SeDebugPrivilege	1064	chkdsk.exe

pid	process
3020	Explorer.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

PO.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 3008 wrote to memory of 2180	3008	PO.exe	PO.exe
PID 3008 wrote to memory of 2180	3008	PO.exe	PO.exe
PID 3008 wrote to memory of 2180	3008	PO.exe	PO.exe
PID 3008 wrote to memory of 2180	3008	PO.exe	PO.exe
PID 3008 wrote to memory of 2180	3008	PO.exe	PO.exe
PID 3008 wrote to memory of 2180	3008	PO.exe	PO.exe
PID 3020 wrote to memory of 1064	3020	Explorer.EXE	chkdsk.exe
PID 3020 wrote to memory of 1064	3020	Explorer.EXE	chkdsk.exe
PID 3020 wrote to memory of 1064	3020	Explorer.EXE	chkdsk.exe
PID 1064 wrote to memory of 3944	1064	chkdsk.exe	cmd.exe
PID 1064 wrote to memory of 3944	1064	chkdsk.exe	cmd.exe
PID 1064 wrote to memory of 3944	1064	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3020

C:\Users\Admin\AppData\Local\Temp\PO.exe
"C:\Users\Admin\AppData\Local\Temp\PO.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3008

C:\Users\Admin\AppData\Local\Temp\PO.exe
"C:\Users\Admin\AppData\Local\Temp\PO.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2180

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:1064

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\PO.exe"
3⤵
PID:3944

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsl8880.tmp\lzcjm.dll
MD5
2167d71117d7562c8c376704df4715e4

SHA1
c55221cf62448f0c0d567d3e33406c94ff80a88c

SHA256
0aee3437cb7246fa0c515885653aa8c18103d03437a3768370b01d6fac4d1ad1

SHA512
255a5b641e159cad54c913cba9a9f9e4c118f3cd90ed4cb2f7339c3acee8301246dcb5f25097729ad8adf5fd74b29998381dadb3c8d8e386bcf07e9d82d74d04

Download Submit
memory/1064-129-0x0000000005800000-0x0000000005893000-memory.dmp

Filesize
588KB

Download
memory/1064-128-0x0000000005440000-0x0000000005760000-memory.dmp

Filesize
3.1MB

Download
memory/1064-126-0x0000000000230000-0x000000000023A000-memory.dmp

Filesize
40KB

Download
memory/1064-127-0x0000000005290000-0x00000000052BF000-memory.dmp

Filesize
188KB

Download
memory/1064-124-0x0000000000000000-mapping.dmp

Download
memory/2180-122-0x0000000000D40000-0x0000000000D54000-memory.dmp

Filesize
80KB

Download
memory/2180-121-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2180-118-0x00000000009D0000-0x0000000000CF0000-memory.dmp

Filesize
3.1MB

Download
memory/2180-119-0x0000000000CF0000-0x0000000000D04000-memory.dmp

Filesize
80KB

Download
memory/2180-116-0x000000000041F150-mapping.dmp

Download
memory/2180-115-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3020-123-0x0000000002420000-0x0000000002524000-memory.dmp

Filesize
1.0MB

Download
memory/3020-120-0x0000000004A30000-0x0000000004BC6000-memory.dmp

Filesize
1.6MB

Download
memory/3020-130-0x0000000004BD0000-0x0000000004D40000-memory.dmp

Filesize
1.4MB

Download
memory/3944-125-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads