vjw0rm | dee7026593429404b9cc00a28b12202ecf60049be57f5bf9a0b7dae383055e06

General

Target

PO_20230025-03662.js
Size

633KB
MD5

9659595bb96500ea6ac6892bcb450d03
SHA1

db8e3c13226387bbdd7703abd60baf6e78851789
SHA256

dee7026593429404b9cc00a28b12202ecf60049be57f5bf9a0b7dae383055e06
SHA512

e6da4a8e7d5e99813d581bb18eee55c9aa629a974412887b1f412f6b860283be68f3d47b16d11ee738c2b8e7500b33c42e24f6d20cfb4175598e0c9c99e3a48c

Score

10^/10

vjw0rm xloader vs8g loader persistence rat suricata trojan worm

Malware Config

Extracted

Family

xloader

Version

2.9

Campaign

vs8g

Decoy

xEVEsySadSMf8UUC

H8ZbYtGKWPCfp91+uS3TFo/F7tYacwDqHw==

L/St5UjIhTMzEHsb

8h8tDvq0nl8JCWoagxa0MVyvnA==

7bml44z9jZsZx8Co2T8=

EwH88ZtcOu8ehs2P2o6wv78FEe4+xRQ=

bTn3LpE1HfpPAXI=

nYxT+9GLhS1d3zzGJuTDlgpT

HxonIwh8TesenMCo2T8=

Ki83MiehhC9e1i7YQ/Wd32JsGcun

wHcUByFRMuEGh8Co2T8=

86tqpg/Jy60eFmMRPefDlgpT

grSUYa5yahUf8UUC

HVviVsk7Cb6Elc571pnSWCJ93G17PkiI

6LJ1qBPUtGNIl8Co2T8=

AYuWD33xt44VxsCo2T8=

/smXvLMh868VzQqs99/DlgpT

1kEMNVtaMw6KmN+YANYm+kA=

daarti3nbFVKnsCo2T8=

0EJM6cFFHvawA2U=

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\bin.exe	xloader
behavioral1/memory/1492-66-0x0000000000080000-0x00000000000AC000-memory.dmp	xloader
C:\Users\Admin\AppData\Local\Temp\bin.exe	xloader
behavioral1/memory/1492-72-0x0000000000080000-0x00000000000AC000-memory.dmp	xloader

Blocklisted process makes network request 16 IoCs

Processes:

wscript.exe

flow	pid	process
4	2044	wscript.exe
5	2044	wscript.exe
7	2044	wscript.exe
11	2044	wscript.exe
15	2044	wscript.exe
16	2044	wscript.exe
23	2044	wscript.exe
30	2044	wscript.exe
32	2044	wscript.exe
39	2044	wscript.exe
45	2044	wscript.exe
53	2044	wscript.exe
57	2044	wscript.exe
60	2044	wscript.exe
62	2044	wscript.exe
67	2044	wscript.exe

Executes dropped EXE 1 IoCs

Processes:

bin.exe

pid process

952 bin.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:

bin.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation bin.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation	bin.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

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

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

control.exewscript.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	control.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\LNU4L = "C:\\Program Files (x86)\\Saz7tdx\\configyjlhb6b.exe"	control.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run\YVBPFHTJIQ = "\"C:\\Users\\Admin\\AppData\\Roaming\\KmBIsnwxko.js\""	wscript.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

bin.execontrol.exe

description	pid	process	target process
PID 952 set thread context of 1372	952	bin.exe	Explorer.EXE
PID 1492 set thread context of 1372	1492	control.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

control.exe

description ioc process

File opened for modification C:\Program Files (x86)\Saz7tdx\configyjlhb6b.exe control.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Program Files (x86)\Saz7tdx\configyjlhb6b.exe	control.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

control.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1819626980-2277161760-1023733287-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	control.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

bin.execontrol.exe

pid	process
952	bin.exe
952	bin.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe
1492	control.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

bin.execontrol.exe

pid process

952 bin.exe
952 bin.exe
952 bin.exe
1492 control.exe
1492 control.exe
1492 control.exe
1492 control.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

bin.execontrol.exe

description pid process

Token: SeDebugPrivilege 952 bin.exe
Token: SeDebugPrivilege 1492 control.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1372 Explorer.EXE
1372 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1372 Explorer.EXE
1372 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	952	bin.exe
Token: SeDebugPrivilege	1492	control.exe

pid	process
1372	Explorer.EXE
1372	Explorer.EXE

pid	process
1372	Explorer.EXE
1372	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

wscript.exeExplorer.EXEcontrol.exe

description	pid	process	target process
PID 1928 wrote to memory of 2044	1928	wscript.exe	wscript.exe
PID 1928 wrote to memory of 2044	1928	wscript.exe	wscript.exe
PID 1928 wrote to memory of 2044	1928	wscript.exe	wscript.exe
PID 1928 wrote to memory of 952	1928	wscript.exe	bin.exe
PID 1928 wrote to memory of 952	1928	wscript.exe	bin.exe
PID 1928 wrote to memory of 952	1928	wscript.exe	bin.exe
PID 1928 wrote to memory of 952	1928	wscript.exe	bin.exe
PID 1372 wrote to memory of 1492	1372	Explorer.EXE	control.exe
PID 1372 wrote to memory of 1492	1372	Explorer.EXE	control.exe
PID 1372 wrote to memory of 1492	1372	Explorer.EXE	control.exe
PID 1372 wrote to memory of 1492	1372	Explorer.EXE	control.exe
PID 1492 wrote to memory of 1512	1492	control.exe	cmd.exe
PID 1492 wrote to memory of 1512	1492	control.exe	cmd.exe
PID 1492 wrote to memory of 1512	1492	control.exe	cmd.exe
PID 1492 wrote to memory of 1512	1492	control.exe	cmd.exe
PID 1492 wrote to memory of 308	1492	control.exe	Firefox.exe
PID 1492 wrote to memory of 308	1492	control.exe	Firefox.exe
PID 1492 wrote to memory of 308	1492	control.exe	Firefox.exe
PID 1492 wrote to memory of 308	1492	control.exe	Firefox.exe
PID 1492 wrote to memory of 308	1492	control.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1372

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\PO_20230025-03662.js
2⤵
- Suspicious use of WriteProcessMemory
PID:1928

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\KmBIsnwxko.js"
3⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:2044

C:\Users\Admin\AppData\Local\Temp\bin.exe
"C:\Users\Admin\AppData\Local\Temp\bin.exe"
3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:952

C:\Windows\SysWOW64\control.exe
"C:\Windows\SysWOW64\control.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1492

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\bin.exe"
3⤵
PID:1512

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:308

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

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

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

MD5
3ae87cd93196b3f86a2e1cfa3e6c9133

SHA1
64b444869181c8893d695072239bc48681ea10cd

SHA256
0a1b761095e129d76033c7bde535ca8f0517b4ddaaeda3981b5d8f998f8cf407

SHA512
1e1490502069ff5328939cc30a8e1aa74089e9cf918a27c0ce831c877035fe578811fcb970859c88437724c65383e86f055eedad4c14e3699d4270d280b865e8

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

MD5
3ae87cd93196b3f86a2e1cfa3e6c9133

SHA1
64b444869181c8893d695072239bc48681ea10cd

SHA256
0a1b761095e129d76033c7bde535ca8f0517b4ddaaeda3981b5d8f998f8cf407

SHA512
1e1490502069ff5328939cc30a8e1aa74089e9cf918a27c0ce831c877035fe578811fcb970859c88437724c65383e86f055eedad4c14e3699d4270d280b865e8

Download Submit
C:\Users\Admin\AppData\Roaming\KmBIsnwxko.js
Filesize
117KB

MD5
0e20eafe54da8cd708fe740ffca1a02d

SHA1
c8b05acaf83fd25bc55e0ab01b7df98593c7a5f5

SHA256
c0f92a810bb3470ce1fd1e6b532ed371c2bc8d397beb6a29e2ddd68a5ef287b6

SHA512
f8a614ddadfb3e350df15884e976dfcfd94af55b614506a351ab02395c52b20c15b7ffd93e2aefedc1a89b17ed4af84256f4920fae6f4cf19862208e612515f4

Download Submit
memory/952-57-0x0000000000000000-mapping.dmp

Download
memory/952-60-0x0000000000780000-0x0000000000A83000-memory.dmp

Filesize
3.0MB

Download
memory/952-61-0x0000000000390000-0x00000000003A1000-memory.dmp

Filesize
68KB

Download
memory/1372-71-0x0000000004C70000-0x0000000004D45000-memory.dmp

Filesize
852KB

Download
memory/1372-73-0x0000000004C70000-0x0000000004D45000-memory.dmp

Filesize
852KB

Download
memory/1372-62-0x0000000007060000-0x00000000071AF000-memory.dmp

Filesize
1.3MB

Download
memory/1492-64-0x0000000076011000-0x0000000076013000-memory.dmp

Filesize
8KB

Download
memory/1492-63-0x0000000000000000-mapping.dmp

Download
memory/1492-66-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/1492-72-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/1492-65-0x0000000000860000-0x000000000087F000-memory.dmp

Filesize
124KB

Download
memory/1492-69-0x0000000001F50000-0x0000000002253000-memory.dmp

Filesize
3.0MB

Download
memory/1492-70-0x0000000001D40000-0x0000000001DD0000-memory.dmp

Filesize
576KB

Download
memory/1512-68-0x0000000000000000-mapping.dmp

Download
memory/1928-54-0x000007FEFC061000-0x000007FEFC063000-memory.dmp

Filesize
8KB

Download
memory/2044-55-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads