vjw0rm | cbc74da583fc123ca5783a7c977f382af7a71a227888d95a9b8203bd0a2adf62

General

Target

PROCUREMENT_001.js
Size

396KB
MD5

ead2e4417e0ba32a086cbd96ffde7ce5
SHA1

0f47a3ec2a02054f1d54815544feaac77fb32793
SHA256

cbc74da583fc123ca5783a7c977f382af7a71a227888d95a9b8203bd0a2adf62
SHA512

e26c09f7e4318f62cc1e0f4f84e77cf28e6a3d68a0dfb20f84e8b849bc65bf06a4aca46c446c7ae7ea831b9ff047aa32fe6bb82b946e149d68bfa3df3f0efae4

Score

10^/10

vjw0rm xloader r4wf loader persistence rat suricata trojan worm

Malware Config

Extracted

Family

xloader

Version

2.8

Campaign

r4wf

Decoy

eQLhwti8E4CX1m8bp0WK2Q==

axoAyf6nwR9Y43o1nFx+930=

vf9fMlHrgdcI

TRQU8PPgFWegAcLFsjQ5TUX2

CFXUiz7SjsLqcQ==

XKeIL6Nmg+8pokY+wjaooasXRQIt

NLSkgIdanO/4SNPAdlKUrIms7Q==

TTKhgqyuCnCmH7yGa12g8HXrnY/nKGI=

5X0d70pNfaYGRgI=

fXXOk9C1+U9bhkIBIqn8

dN7HmMiv/TtAgyP2tYrEG2Yq4Yw=

HRqUgbJeorn4Zg==

MZ7Sh6xm71vhCNLW

7iFsO188fKYGRgI=

o9VC9kgPVXmCz2gBIqn8

B0y+iMbD+lzhCNLW

ciUeBS0WbdHuVGH+xJU=

Q3334PeyxydNmzoBIqn8

kgHx3RbrgdcI

WQjgo8h9g6YGRgI=

Extracted

Family

vjw0rm

C2

http://franmhort.duia.ro:8152

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Xloader Payload 4 IoCs

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\greatk.exe	xloader
C:\Users\Admin\AppData\Local\Temp\greatk.exe	xloader
behavioral1/memory/1740-68-0x0000000000090000-0x00000000000BC000-memory.dmp	xloader
behavioral1/memory/1740-72-0x0000000000090000-0x00000000000BC000-memory.dmp	xloader

Blocklisted process makes network request 5 IoCs

Processes:

wscript.exemsiexec.exe

flow pid process

4 1528 wscript.exe
14 1740 msiexec.exe
18 1740 msiexec.exe
30 1528 wscript.exe
32 1740 msiexec.exe
Executes dropped EXE 1 IoCs

Processes:

greatk.exe

pid process

860 greatk.exe
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

greatk.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation greatk.exe

flow	pid	process
4	1528	wscript.exe
14	1740	msiexec.exe
18	1740	msiexec.exe
30	1528	wscript.exe
32	1740	msiexec.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation	greatk.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TKlRbFxljO.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TKlRbFxljO.js	wscript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\YVBPFHTJIQ = "\"C:\\Users\\Admin\\AppData\\Roaming\\TKlRbFxljO.js\""	wscript.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

greatk.exemsiexec.exe

description	pid	process	target process
PID 860 set thread context of 1312	860	greatk.exe	Explorer.EXE
PID 1740 set thread context of 1312	1740	msiexec.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

Suspicious behavior: EnumeratesProcesses 27 IoCs

Processes:

greatk.exemsiexec.exe

pid	process
860	greatk.exe
860	greatk.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe
1740	msiexec.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

greatk.exemsiexec.exe

pid process

860 greatk.exe
860 greatk.exe
860 greatk.exe
1740 msiexec.exe
1740 msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

greatk.exemsiexec.exe

description pid process

Token: SeDebugPrivilege 860 greatk.exe
Token: SeDebugPrivilege 1740 msiexec.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1312 Explorer.EXE
1312 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1312 Explorer.EXE
1312 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	860	greatk.exe
Token: SeDebugPrivilege	1740	msiexec.exe

pid	process
1312	Explorer.EXE
1312	Explorer.EXE

pid	process
1312	Explorer.EXE
1312	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

wscript.exeExplorer.EXEmsiexec.exe

description	pid	process	target process
PID 532 wrote to memory of 1528	532	wscript.exe	wscript.exe
PID 532 wrote to memory of 1528	532	wscript.exe	wscript.exe
PID 532 wrote to memory of 1528	532	wscript.exe	wscript.exe
PID 532 wrote to memory of 860	532	wscript.exe	greatk.exe
PID 532 wrote to memory of 860	532	wscript.exe	greatk.exe
PID 532 wrote to memory of 860	532	wscript.exe	greatk.exe
PID 532 wrote to memory of 860	532	wscript.exe	greatk.exe
PID 1312 wrote to memory of 1740	1312	Explorer.EXE	msiexec.exe
PID 1312 wrote to memory of 1740	1312	Explorer.EXE	msiexec.exe
PID 1312 wrote to memory of 1740	1312	Explorer.EXE	msiexec.exe
PID 1312 wrote to memory of 1740	1312	Explorer.EXE	msiexec.exe
PID 1312 wrote to memory of 1740	1312	Explorer.EXE	msiexec.exe
PID 1312 wrote to memory of 1740	1312	Explorer.EXE	msiexec.exe
PID 1312 wrote to memory of 1740	1312	Explorer.EXE	msiexec.exe
PID 1740 wrote to memory of 1704	1740	msiexec.exe	cmd.exe
PID 1740 wrote to memory of 1704	1740	msiexec.exe	cmd.exe
PID 1740 wrote to memory of 1704	1740	msiexec.exe	cmd.exe
PID 1740 wrote to memory of 1704	1740	msiexec.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:1312

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\PROCUREMENT_001.js
2⤵
- Suspicious use of WriteProcessMemory
PID:532

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\TKlRbFxljO.js"
3⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1528

C:\Users\Admin\AppData\Local\Temp\greatk.exe
"C:\Users\Admin\AppData\Local\Temp\greatk.exe"
3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:860

C:\Windows\SysWOW64\msiexec.exe
"C:\Windows\SysWOW64\msiexec.exe"
2⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1740

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\greatk.exe"
3⤵
PID:1704

Network

MITRE ATT&CK Enterprise 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

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\greatk.exe
Filesize
174KB

MD5
4e4fe9a1e4568efac0293fcaf431f2da

SHA1
c17588029ab95904ab548b5c8fb4dc626e1d8d12

SHA256
929b0c7d953ee579a49a6d4a9456a1a45a9f4e81933adf6a07b34d6669f096b6

SHA512
7a323280ef25c208fbe726e5ba21200ec9af976f30da3ea330387afe95c41ad082404d4cd811672f0b7e9764759c8cc7b1b2252da242ff8253e429bb2cc7a461

Download Submit
C:\Users\Admin\AppData\Local\Temp\greatk.exe
Filesize
174KB

MD5
4e4fe9a1e4568efac0293fcaf431f2da

SHA1
c17588029ab95904ab548b5c8fb4dc626e1d8d12

SHA256
929b0c7d953ee579a49a6d4a9456a1a45a9f4e81933adf6a07b34d6669f096b6

SHA512
7a323280ef25c208fbe726e5ba21200ec9af976f30da3ea330387afe95c41ad082404d4cd811672f0b7e9764759c8cc7b1b2252da242ff8253e429bb2cc7a461

Download Submit
C:\Users\Admin\AppData\Roaming\TKlRbFxljO.js
Filesize
30KB

MD5
e80c5a9f243cd8589446c7531265ad1c

SHA1
83fa6c700a036754f8f506ce7eea111cbb70fed8

SHA256
81c5757f8a810180b55725f2778493af9ca1f25a87c7f9154646ceeac628cd37

SHA512
24e26cba2e7076f2208306b93eadb61782d08029bda21433c682ba88333ab28225388a6823e7b566e5b18ce0b0a91dad20d64be59a03d5f22491a0a7496544ba

Download Submit
memory/532-54-0x000007FEFB6E1000-0x000007FEFB6E3000-memory.dmp

Filesize
8KB

Download
memory/860-57-0x0000000000000000-mapping.dmp

Download
memory/860-60-0x0000000000790000-0x0000000000A93000-memory.dmp

Filesize
3.0MB

Download
memory/860-61-0x00000000001C0000-0x00000000001D1000-memory.dmp

Filesize
68KB

Download
memory/1312-71-0x0000000006530000-0x00000000065E6000-memory.dmp

Filesize
728KB

Download
memory/1312-62-0x0000000004C70000-0x0000000004E09000-memory.dmp

Filesize
1.6MB

Download
memory/1312-73-0x0000000006530000-0x00000000065E6000-memory.dmp

Filesize
728KB

Download
memory/1528-55-0x0000000000000000-mapping.dmp

Download
memory/1704-66-0x0000000000000000-mapping.dmp

Download
memory/1740-63-0x0000000000000000-mapping.dmp

Download
memory/1740-68-0x0000000000090000-0x00000000000BC000-memory.dmp

Filesize
176KB

Download
memory/1740-69-0x0000000002250000-0x0000000002553000-memory.dmp

Filesize
3.0MB

Download
memory/1740-70-0x0000000000A60000-0x0000000000AF0000-memory.dmp

Filesize
576KB

Download
memory/1740-67-0x00000000009B0000-0x00000000009C4000-memory.dmp

Filesize
80KB

Download
memory/1740-72-0x0000000000090000-0x00000000000BC000-memory.dmp

Filesize
176KB

Download
memory/1740-64-0x0000000075711000-0x0000000075713000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads