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
behavioral2/memory/2028-130-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1300-161-0x0000000003200000-0x000000000322F000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

LVvoucher.exeLVvoucher.execmmon32.exe

description	pid	process	target process
PID 2672 set thread context of 2028	2672	LVvoucher.exe	LVvoucher.exe
PID 2028 set thread context of 3028	2028	LVvoucher.exe	Explorer.EXE
PID 1300 set thread context of 3028	1300	cmmon32.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

3892 schtasks.exe

pid	process
3892	schtasks.exe

Suspicious behavior: EnumeratesProcesses 43 IoCs

Processes:

powershell.exeLVvoucher.execmmon32.exe

pid	process
3312	powershell.exe
2028	LVvoucher.exe
2028	LVvoucher.exe
2028	LVvoucher.exe
2028	LVvoucher.exe
3312	powershell.exe
3312	powershell.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe
1300	cmmon32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3028 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

LVvoucher.execmmon32.exe

pid process

2028 LVvoucher.exe
2028 LVvoucher.exe
2028 LVvoucher.exe
1300 cmmon32.exe
1300 cmmon32.exe

pid	process
3028	Explorer.EXE

pid	process
2028	LVvoucher.exe
2028	LVvoucher.exe
2028	LVvoucher.exe
1300	cmmon32.exe
1300	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

powershell.exeLVvoucher.execmmon32.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	3312	powershell.exe
Token: SeDebugPrivilege	2028	LVvoucher.exe
Token: SeDebugPrivilege	1300	cmmon32.exe
Token: SeShutdownPrivilege	3028	Explorer.EXE
Token: SeCreatePagefilePrivilege	3028	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

LVvoucher.exeExplorer.EXEcmmon32.exe

description	pid	process	target process
PID 2672 wrote to memory of 3312	2672	LVvoucher.exe	powershell.exe
PID 2672 wrote to memory of 3312	2672	LVvoucher.exe	powershell.exe
PID 2672 wrote to memory of 3312	2672	LVvoucher.exe	powershell.exe
PID 2672 wrote to memory of 3892	2672	LVvoucher.exe	schtasks.exe
PID 2672 wrote to memory of 3892	2672	LVvoucher.exe	schtasks.exe
PID 2672 wrote to memory of 3892	2672	LVvoucher.exe	schtasks.exe
PID 2672 wrote to memory of 2028	2672	LVvoucher.exe	LVvoucher.exe
PID 2672 wrote to memory of 2028	2672	LVvoucher.exe	LVvoucher.exe
PID 2672 wrote to memory of 2028	2672	LVvoucher.exe	LVvoucher.exe
PID 2672 wrote to memory of 2028	2672	LVvoucher.exe	LVvoucher.exe
PID 2672 wrote to memory of 2028	2672	LVvoucher.exe	LVvoucher.exe
PID 2672 wrote to memory of 2028	2672	LVvoucher.exe	LVvoucher.exe
PID 3028 wrote to memory of 1300	3028	Explorer.EXE	cmmon32.exe
PID 3028 wrote to memory of 1300	3028	Explorer.EXE	cmmon32.exe
PID 3028 wrote to memory of 1300	3028	Explorer.EXE	cmmon32.exe
PID 1300 wrote to memory of 1516	1300	cmmon32.exe	cmd.exe
PID 1300 wrote to memory of 1516	1300	cmmon32.exe	cmd.exe
PID 1300 wrote to memory of 1516	1300	cmmon32.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3028

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:2672

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:3312

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UcgxBJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEE25.tmp"
3⤵
- Creates scheduled task(s)
PID:3892

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:2028

C:\Windows\SysWOW64\cmmon32.exe
"C:\Windows\SysWOW64\cmmon32.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1300

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\LVvoucher.exe"
3⤵
PID:1516

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\tmpEE25.tmp
MD5
b5b1b22ec218c98228bc6927cf369774

SHA1
9f21c385222fa326524b42eb42244ea4c00acee4

SHA256
ffcb5c441addf94c820f22d06f98c0a127ed76f13e55fb4c1a944fdd86d91442

SHA512
feca218c64ebcdb0e7535f00b60457a56b9d0157d2943130a7c20ab7e3dd36192d3e0721d3b99e830277f8d319bf0f34dc35d8e85fe37223af3833407b110c3a

Download Submit
memory/1300-163-0x0000000004760000-0x0000000004A80000-memory.dmp

Filesize
3.1MB

Download
memory/1300-161-0x0000000003200000-0x000000000322F000-memory.dmp

Filesize
188KB

Download
memory/1300-377-0x0000000004B20000-0x0000000004BB3000-memory.dmp

Filesize
588KB

Download
memory/1300-159-0x0000000000F50000-0x0000000000F5C000-memory.dmp

Filesize
48KB

Download
memory/2028-141-0x0000000001480000-0x00000000017A0000-memory.dmp

Filesize
3.1MB

Download
memory/2028-130-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2028-142-0x0000000000D00000-0x0000000000E4A000-memory.dmp

Filesize
1.3MB

Download
memory/2672-124-0x00000000077B0000-0x000000000784C000-memory.dmp

Filesize
624KB

Download
memory/2672-121-0x00000000028A0000-0x00000000028AA000-memory.dmp

Filesize
40KB

Download
memory/2672-123-0x0000000004F40000-0x0000000004F4C000-memory.dmp

Filesize
48KB

Download
memory/2672-119-0x0000000005370000-0x000000000586E000-memory.dmp

Filesize
5.0MB

Download
memory/2672-118-0x00000000003F0000-0x00000000004BA000-memory.dmp

Filesize
808KB

Download
memory/2672-125-0x0000000007940000-0x00000000079AA000-memory.dmp

Filesize
424KB

Download
memory/2672-120-0x0000000004D10000-0x0000000004DA2000-memory.dmp

Filesize
584KB

Download
memory/2672-122-0x0000000004E70000-0x000000000536E000-memory.dmp

Filesize
5.0MB

Download
memory/3028-378-0x0000000004F90000-0x000000000510D000-memory.dmp

Filesize
1.5MB

Download
memory/3028-143-0x0000000004E10000-0x0000000004F8A000-memory.dmp

Filesize
1.5MB

Download
memory/3312-139-0x0000000007F20000-0x0000000007F3C000-memory.dmp

Filesize
112KB

Download
memory/3312-160-0x00000000099E0000-0x0000000009A85000-memory.dmp

Filesize
660KB

Download
memory/3312-137-0x0000000008150000-0x00000000084A0000-memory.dmp

Filesize
3.3MB

Download
memory/3312-136-0x0000000007FE0000-0x0000000008046000-memory.dmp

Filesize
408KB

Download
memory/3312-135-0x0000000007840000-0x00000000078A6000-memory.dmp

Filesize
408KB

Download
memory/3312-144-0x0000000008870000-0x00000000088E6000-memory.dmp

Filesize
472KB

Download
memory/3312-153-0x00000000098A0000-0x00000000098D3000-memory.dmp

Filesize
204KB

Download
memory/3312-154-0x0000000009880000-0x000000000989E000-memory.dmp

Filesize
120KB

Download
memory/3312-134-0x0000000007670000-0x0000000007692000-memory.dmp

Filesize
136KB

Download
memory/3312-140-0x0000000008520000-0x000000000856B000-memory.dmp

Filesize
300KB

Download
memory/3312-162-0x000000007F610000-0x000000007F611000-memory.dmp

Filesize
4KB

Download
memory/3312-133-0x0000000004E32000-0x0000000004E33000-memory.dmp

Filesize
4KB

Download
memory/3312-132-0x0000000004E30000-0x0000000004E31000-memory.dmp

Filesize
4KB

Download
memory/3312-164-0x0000000009BC0000-0x0000000009C54000-memory.dmp

Filesize
592KB

Download
memory/3312-173-0x0000000004E33000-0x0000000004E34000-memory.dmp

Filesize
4KB

Download
memory/3312-358-0x0000000008A70000-0x0000000008A8A000-memory.dmp

Filesize
104KB

Download
memory/3312-363-0x0000000008A20000-0x0000000008A28000-memory.dmp

Filesize
32KB

Download
memory/3312-131-0x00000000078B0000-0x0000000007ED8000-memory.dmp

Filesize
6.2MB

Download
memory/3312-129-0x0000000004CC0000-0x0000000004CF6000-memory.dmp

Filesize
216KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads