formbook | a9b0dca2f97a588928c46ce6a186ad9470c1f93637858180069e6ed02c93c8e7

General

Target

New order list is attached.exe
Size

1.0MB
MD5

f827aab7bbb871e026de55c9884c7986
SHA1

dc4c11b36add611aee52a751e1f2aad8246da3d5
SHA256

4ed75b8466a537951e39fcf6a8a024701d41c6ff3be98153dcc81dbff6a75756
SHA512

54fcc300037d6bb87b283d6073127dd2f1e07ce389c2cf2d97635507be1f05eb4d7dc6348e11d886aa9f3339b93ff58c2d62e3d97dd9bcc13f60eef7d8efa6e5

Score

10^/10

formbook 3nop persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

3nop

Decoy

videohm.com

panache-rose.com

alnooncars-kw.com

trueblue2u.com

brussels-cafe.com

ip2c.net

influenzerr.com

rbcoq.com

zzful.com

drainthe.com

sumaholesson.com

cursosaprovados.com

genotecinc.com

dbrulhart.com

theapiarystudios.com

kensyu-kan.com

dkku88.com

tikhyper.com

aztecnort.com

homebrim.com

Signatures

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

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1920-137-0x0000000072480000-0x00000000724AE000-memory.dmp	formbook
behavioral2/memory/1920-139-0x0000000072480000-0x00000000724AE000-memory.dmp	formbook
behavioral2/memory/752-145-0x0000000000E90000-0x0000000000EBE000-memory.dmp	formbook

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

New order list is attached.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2403053463-4052593947-3703345493-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Mxnklpa = "C:\\Users\\Public\\aplknxM.url"	New order list is attached.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

logagent.exechkdsk.exe

description	pid	process	target process
PID 1920 set thread context of 2744	1920	logagent.exe	Explorer.EXE
PID 752 set thread context of 2744	752	chkdsk.exe	Explorer.EXE

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 18 IoCs

Processes:

logagent.exechkdsk.exe

pid	process
1920	logagent.exe
1920	logagent.exe
1920	logagent.exe
1920	logagent.exe
752	chkdsk.exe
752	chkdsk.exe
752	chkdsk.exe
752	chkdsk.exe
752	chkdsk.exe
752	chkdsk.exe
752	chkdsk.exe
752	chkdsk.exe
752	chkdsk.exe
752	chkdsk.exe
752	chkdsk.exe
752	chkdsk.exe
752	chkdsk.exe
752	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2744 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

logagent.exechkdsk.exe

pid process

1920 logagent.exe
1920 logagent.exe
1920 logagent.exe
752 chkdsk.exe
752 chkdsk.exe

pid	process
2744	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

logagent.exeExplorer.EXEchkdsk.exe

description	pid	process
Token: SeDebugPrivilege	1920	logagent.exe
Token: SeShutdownPrivilege	2744	Explorer.EXE
Token: SeCreatePagefilePrivilege	2744	Explorer.EXE
Token: SeDebugPrivilege	752	chkdsk.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

New order list is attached.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 4948 wrote to memory of 1920	4948	New order list is attached.exe	logagent.exe
PID 4948 wrote to memory of 1920	4948	New order list is attached.exe	logagent.exe
PID 4948 wrote to memory of 1920	4948	New order list is attached.exe	logagent.exe
PID 4948 wrote to memory of 1920	4948	New order list is attached.exe	logagent.exe
PID 4948 wrote to memory of 1920	4948	New order list is attached.exe	logagent.exe
PID 4948 wrote to memory of 1920	4948	New order list is attached.exe	logagent.exe
PID 2744 wrote to memory of 752	2744	Explorer.EXE	chkdsk.exe
PID 2744 wrote to memory of 752	2744	Explorer.EXE	chkdsk.exe
PID 2744 wrote to memory of 752	2744	Explorer.EXE	chkdsk.exe
PID 752 wrote to memory of 3540	752	chkdsk.exe	cmd.exe
PID 752 wrote to memory of 3540	752	chkdsk.exe	cmd.exe
PID 752 wrote to memory of 3540	752	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2744

C:\Users\Admin\AppData\Local\Temp\New order list is attached.exe
"C:\Users\Admin\AppData\Local\Temp\New order list is attached.exe"
2⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4948

C:\Windows\SysWOW64\logagent.exe
C:\Windows\System32\logagent.exe
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1920

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:752

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\SysWOW64\logagent.exe"
3⤵
PID:3540

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/752-144-0x0000000000200000-0x000000000020A000-memory.dmp

Filesize
40KB

Download
memory/752-147-0x00000000013F0000-0x0000000001483000-memory.dmp

Filesize
588KB

Download
memory/752-146-0x0000000001690000-0x00000000019DA000-memory.dmp

Filesize
3.3MB

Download
memory/752-145-0x0000000000E90000-0x0000000000EBE000-memory.dmp

Filesize
184KB

Download
memory/1920-138-0x0000000000600000-0x0000000000601000-memory.dmp

Filesize
4KB

Download
memory/1920-141-0x000000007249E000-0x000000007249F000-memory.dmp

Filesize
4KB

Download
memory/1920-140-0x00000000025C0000-0x000000000290A000-memory.dmp

Filesize
3.3MB

Download
memory/1920-142-0x00000000024E0000-0x00000000024F4000-memory.dmp

Filesize
80KB

Download
memory/1920-139-0x0000000072480000-0x00000000724AE000-memory.dmp

Filesize
184KB

Download
memory/1920-137-0x0000000072480000-0x00000000724AE000-memory.dmp

Filesize
184KB

Download
memory/2744-143-0x0000000008B30000-0x0000000008C8C000-memory.dmp

Filesize
1.4MB

Download
memory/2744-148-0x0000000009210000-0x0000000009357000-memory.dmp

Filesize
1.3MB

Download
memory/4948-134-0x00000000022B0000-0x00000000022B1000-memory.dmp

Filesize
4KB

Download
memory/4948-136-0x0000000003F46000-0x0000000003F47000-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