formbook | 77604e2646be4fb59a16e33ca5e78a73ec5045b8f1cce6f5ba16c11304b1c2ee

General

Target

LVvoucher.exe
Size

779KB
MD5

4f2cf362036af705349843df3419ae5d
SHA1

49dfd4b26e8c9f2cc76df24c55e6616f438bf422
SHA256

77604e2646be4fb59a16e33ca5e78a73ec5045b8f1cce6f5ba16c11304b1c2ee
SHA512

8b5682f5955cdb1e1218735d100234f571f27a2b793cedd68572e8e62a1cef0cf716327b44fbaa3f29bc792a5e842bbfc8320ed175580333dc57eff8cf7fb586

Score

10^/10

formbook oh75 rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

oh75

Decoy

denizgidam.com

6cc06.com

charlottewaldburgzeil.com

medijanus.com

qingdaoyiersan.com

datcabilgisayar.xyz

111439d.com

xn--1ruo40k.com

wu6enxwcx5h3.xyz

vnscloud.net

brtka.xyz

showztime.com

promocoesdedezenbro.com

wokpy.com

chnowuk.online

rockshotscafe.com

pelrjy.com

nato-riness.com

feixiang-chem.com

thcoinexchange.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Formbook Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/752-63-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1124-75-0x00000000000D0000-0x00000000000FF000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

920 cmd.exe

pid	process
920	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

LVvoucher.exeLVvoucher.execolorcpl.exe

description	pid	process	target process
PID 1592 set thread context of 752	1592	LVvoucher.exe	LVvoucher.exe
PID 752 set thread context of 1396	752	LVvoucher.exe	Explorer.EXE
PID 1124 set thread context of 1396	1124	colorcpl.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
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1520 schtasks.exe

pid	process
1520	schtasks.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

powershell.exeLVvoucher.execolorcpl.exe

pid	process
924	powershell.exe
752	LVvoucher.exe
752	LVvoucher.exe
1124	colorcpl.exe
1124	colorcpl.exe
1124	colorcpl.exe
1124	colorcpl.exe
1124	colorcpl.exe
1124	colorcpl.exe
1124	colorcpl.exe
1124	colorcpl.exe
1124	colorcpl.exe
1124	colorcpl.exe
1124	colorcpl.exe
1124	colorcpl.exe
1124	colorcpl.exe
1124	colorcpl.exe
1124	colorcpl.exe
1124	colorcpl.exe
1124	colorcpl.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

LVvoucher.execolorcpl.exe

pid process

752 LVvoucher.exe
752 LVvoucher.exe
752 LVvoucher.exe
1124 colorcpl.exe
1124 colorcpl.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exeLVvoucher.execolorcpl.exe

description pid process

Token: SeDebugPrivilege 924 powershell.exe
Token: SeDebugPrivilege 752 LVvoucher.exe
Token: SeDebugPrivilege 1124 colorcpl.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1396 Explorer.EXE
1396 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1396 Explorer.EXE
1396 Explorer.EXE

pid	process
752	LVvoucher.exe
752	LVvoucher.exe
752	LVvoucher.exe
1124	colorcpl.exe
1124	colorcpl.exe

description	pid	process
Token: SeDebugPrivilege	924	powershell.exe
Token: SeDebugPrivilege	752	LVvoucher.exe
Token: SeDebugPrivilege	1124	colorcpl.exe

pid	process
1396	Explorer.EXE
1396	Explorer.EXE

pid	process
1396	Explorer.EXE
1396	Explorer.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

LVvoucher.exeExplorer.EXEcolorcpl.exe

description	pid	process	target process
PID 1592 wrote to memory of 924	1592	LVvoucher.exe	powershell.exe
PID 1592 wrote to memory of 924	1592	LVvoucher.exe	powershell.exe
PID 1592 wrote to memory of 924	1592	LVvoucher.exe	powershell.exe
PID 1592 wrote to memory of 924	1592	LVvoucher.exe	powershell.exe
PID 1592 wrote to memory of 1520	1592	LVvoucher.exe	schtasks.exe
PID 1592 wrote to memory of 1520	1592	LVvoucher.exe	schtasks.exe
PID 1592 wrote to memory of 1520	1592	LVvoucher.exe	schtasks.exe
PID 1592 wrote to memory of 1520	1592	LVvoucher.exe	schtasks.exe
PID 1592 wrote to memory of 752	1592	LVvoucher.exe	LVvoucher.exe
PID 1592 wrote to memory of 752	1592	LVvoucher.exe	LVvoucher.exe
PID 1592 wrote to memory of 752	1592	LVvoucher.exe	LVvoucher.exe
PID 1592 wrote to memory of 752	1592	LVvoucher.exe	LVvoucher.exe
PID 1592 wrote to memory of 752	1592	LVvoucher.exe	LVvoucher.exe
PID 1592 wrote to memory of 752	1592	LVvoucher.exe	LVvoucher.exe
PID 1592 wrote to memory of 752	1592	LVvoucher.exe	LVvoucher.exe
PID 1396 wrote to memory of 1124	1396	Explorer.EXE	colorcpl.exe
PID 1396 wrote to memory of 1124	1396	Explorer.EXE	colorcpl.exe
PID 1396 wrote to memory of 1124	1396	Explorer.EXE	colorcpl.exe
PID 1396 wrote to memory of 1124	1396	Explorer.EXE	colorcpl.exe
PID 1124 wrote to memory of 920	1124	colorcpl.exe	cmd.exe
PID 1124 wrote to memory of 920	1124	colorcpl.exe	cmd.exe
PID 1124 wrote to memory of 920	1124	colorcpl.exe	cmd.exe
PID 1124 wrote to memory of 920	1124	colorcpl.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:1396

C:\Users\Admin\AppData\Local\Temp\LVvoucher.exe
"C:\Users\Admin\AppData\Local\Temp\LVvoucher.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1592

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\UcgxBJ.exe"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:924

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UcgxBJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp24A0.tmp"
3⤵
- Creates scheduled task(s)
PID:1520

C:\Users\Admin\AppData\Local\Temp\LVvoucher.exe
"C:\Users\Admin\AppData\Local\Temp\LVvoucher.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:752

C:\Windows\SysWOW64\colorcpl.exe
"C:\Windows\SysWOW64\colorcpl.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1124

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\LVvoucher.exe"
3⤵
- Deletes itself
PID:920

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp24A0.tmp
MD5
0844c8162e61ac7b12151cfdad0fc627

SHA1
b7be8446adf1ae750771978da6f33b6a0e6b235c

SHA256
06eaa857ac42144a5d42b8fdbdf3db4bfbb2ae6dabb68385df2e40cdf7892385

SHA512
fd687c38c8ca74d5e3a3e859ae2ef522b78394bf383aad68fbb50ee1951f9121a69a17c60b1019bb59b90f39f47377ae7ddf91ed597c71f7bfba23ce10a22fc7

Download Submit
memory/752-67-0x0000000000A20000-0x0000000000D23000-memory.dmp

Filesize
3.0MB

Download
memory/752-61-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/752-70-0x0000000000190000-0x00000000001A4000-memory.dmp

Filesize
80KB

Download
memory/752-63-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/752-62-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/924-72-0x0000000002620000-0x000000000326A000-memory.dmp

Filesize
12.3MB

Download
memory/924-66-0x0000000002620000-0x000000000326A000-memory.dmp

Filesize
12.3MB

Download
memory/924-69-0x0000000002620000-0x000000000326A000-memory.dmp

Filesize
12.3MB

Download
memory/1124-74-0x0000000000A00000-0x0000000000A18000-memory.dmp

Filesize
96KB

Download
memory/1124-77-0x0000000001EC0000-0x0000000001F53000-memory.dmp

Filesize
588KB

Download
memory/1124-76-0x0000000001FB0000-0x00000000022B3000-memory.dmp

Filesize
3.0MB

Download
memory/1124-75-0x00000000000D0000-0x00000000000FF000-memory.dmp

Filesize
188KB

Download
memory/1396-78-0x0000000003FC0000-0x000000000406A000-memory.dmp

Filesize
680KB

Download
memory/1396-71-0x0000000003EF0000-0x0000000003FBB000-memory.dmp

Filesize
812KB

Download
memory/1592-56-0x0000000004DE0000-0x0000000004DE1000-memory.dmp

Filesize
4KB

Download
memory/1592-55-0x0000000076421000-0x0000000076423000-memory.dmp

Filesize
8KB

Download
memory/1592-57-0x00000000002C0000-0x00000000002CC000-memory.dmp

Filesize
48KB

Download
memory/1592-58-0x0000000005790000-0x00000000057FA000-memory.dmp

Filesize
424KB

Download
memory/1592-54-0x0000000000E90000-0x0000000000F5A000-memory.dmp

Filesize
808KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads