vjw0rm | 7d024e7fbc39d9379d96332276f41b08670843de3803ea91b257efeadbf8f46c

General

Target

PO_CG20210302346.js
Size

742KB
MD5

4d7d2a0d4fe470f6cf2a0a9fc519a5ff
SHA1

c8364f810e6c2bef6801c4b7196882dca05decb0
SHA256

7d024e7fbc39d9379d96332276f41b08670843de3803ea91b257efeadbf8f46c
SHA512

fb3c7bb3fdec6257a8c027e54662f4ac9eb9952647201f10a5942011810d9690bf6b970718bc38038093df9f1d8ab349b3b27cf6432ce69df1e383a7074977f5

Score

10^/10

vjw0rm xloader pzi0 loader persistence rat suricata trojan worm

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

pzi0

C2

http://www.buffstaff.com/pzi0/

Decoy

laylmodest.com

woruke.club

metaverseslots.net

syscogent.net

aluxxenterprise.com

lm-solar.com

lightempirestore.com

witcheboutique.com

hometech-bosch.xyz

expert-netcad.com

poteconomist.com

mycousinsfriend.biz

shineveranda.com

collegedictionary.cloud

zqlidexx.com

businessesopportunity.com

2utalahs4.com

participatetn.info

dare2ownit.com

varser.com

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
behavioral2/memory/380-135-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/380-136-0x000000000041D480-mapping.dmp	xloader
behavioral2/memory/380-140-0x0000000000B00000-0x0000000000BAE000-memory.dmp	xloader
behavioral2/memory/1112-144-0x0000000000C20000-0x0000000000C49000-memory.dmp	xloader

Blocklisted process makes network request 18 IoCs

Processes:

wscript.exe

flow	pid	process
11	3320	wscript.exe
16	3320	wscript.exe
23	3320	wscript.exe
24	3320	wscript.exe
29	3320	wscript.exe
30	3320	wscript.exe
33	3320	wscript.exe
35	3320	wscript.exe
38	3320	wscript.exe
42	3320	wscript.exe
49	3320	wscript.exe
53	3320	wscript.exe
55	3320	wscript.exe
60	3320	wscript.exe
63	3320	wscript.exe
68	3320	wscript.exe
71	3320	wscript.exe
75	3320	wscript.exe

Executes dropped EXE 4 IoCs

Processes:

MJoeuu6lp4G7m5Q.exeMJoeuu6lp4G7m5Q.exeMJoeuu6lp4G7m5Q.exeMJoeuu6lp4G7m5Q.exe

pid process

500 MJoeuu6lp4G7m5Q.exe
1160 MJoeuu6lp4G7m5Q.exe
972 MJoeuu6lp4G7m5Q.exe
380 MJoeuu6lp4G7m5Q.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\bXCJbnYyZT.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bXCJbnYyZT.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-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\bXCJbnYyZT.js\""	wscript.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

MJoeuu6lp4G7m5Q.exeMJoeuu6lp4G7m5Q.exeexplorer.exe

description	pid	process	target process
PID 500 set thread context of 380	500	MJoeuu6lp4G7m5Q.exe	MJoeuu6lp4G7m5Q.exe
PID 380 set thread context of 3020	380	MJoeuu6lp4G7m5Q.exe	Explorer.EXE
PID 1112 set thread context of 3020	1112	explorer.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 46 IoCs

Processes:

MJoeuu6lp4G7m5Q.exeMJoeuu6lp4G7m5Q.exeexplorer.exe

pid	process
500	MJoeuu6lp4G7m5Q.exe
500	MJoeuu6lp4G7m5Q.exe
500	MJoeuu6lp4G7m5Q.exe
500	MJoeuu6lp4G7m5Q.exe
380	MJoeuu6lp4G7m5Q.exe
380	MJoeuu6lp4G7m5Q.exe
380	MJoeuu6lp4G7m5Q.exe
380	MJoeuu6lp4G7m5Q.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe
1112	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3020 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

MJoeuu6lp4G7m5Q.exeexplorer.exe

pid process

380 MJoeuu6lp4G7m5Q.exe
380 MJoeuu6lp4G7m5Q.exe
380 MJoeuu6lp4G7m5Q.exe
1112 explorer.exe
1112 explorer.exe

pid	process
3020	Explorer.EXE

pid	process
380	MJoeuu6lp4G7m5Q.exe
380	MJoeuu6lp4G7m5Q.exe
380	MJoeuu6lp4G7m5Q.exe
1112	explorer.exe
1112	explorer.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

MJoeuu6lp4G7m5Q.exeMJoeuu6lp4G7m5Q.exeexplorer.exe

description	pid	process
Token: SeDebugPrivilege	500	MJoeuu6lp4G7m5Q.exe
Token: SeDebugPrivilege	380	MJoeuu6lp4G7m5Q.exe
Token: SeDebugPrivilege	1112	explorer.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

wscript.exeMJoeuu6lp4G7m5Q.exeExplorer.EXEexplorer.exe

description	pid	process	target process
PID 2716 wrote to memory of 3320	2716	wscript.exe	wscript.exe
PID 2716 wrote to memory of 3320	2716	wscript.exe	wscript.exe
PID 2716 wrote to memory of 500	2716	wscript.exe	MJoeuu6lp4G7m5Q.exe
PID 2716 wrote to memory of 500	2716	wscript.exe	MJoeuu6lp4G7m5Q.exe
PID 2716 wrote to memory of 500	2716	wscript.exe	MJoeuu6lp4G7m5Q.exe
PID 500 wrote to memory of 1160	500	MJoeuu6lp4G7m5Q.exe	MJoeuu6lp4G7m5Q.exe
PID 500 wrote to memory of 1160	500	MJoeuu6lp4G7m5Q.exe	MJoeuu6lp4G7m5Q.exe
PID 500 wrote to memory of 1160	500	MJoeuu6lp4G7m5Q.exe	MJoeuu6lp4G7m5Q.exe
PID 500 wrote to memory of 972	500	MJoeuu6lp4G7m5Q.exe	MJoeuu6lp4G7m5Q.exe
PID 500 wrote to memory of 972	500	MJoeuu6lp4G7m5Q.exe	MJoeuu6lp4G7m5Q.exe
PID 500 wrote to memory of 972	500	MJoeuu6lp4G7m5Q.exe	MJoeuu6lp4G7m5Q.exe
PID 500 wrote to memory of 380	500	MJoeuu6lp4G7m5Q.exe	MJoeuu6lp4G7m5Q.exe
PID 500 wrote to memory of 380	500	MJoeuu6lp4G7m5Q.exe	MJoeuu6lp4G7m5Q.exe
PID 500 wrote to memory of 380	500	MJoeuu6lp4G7m5Q.exe	MJoeuu6lp4G7m5Q.exe
PID 500 wrote to memory of 380	500	MJoeuu6lp4G7m5Q.exe	MJoeuu6lp4G7m5Q.exe
PID 500 wrote to memory of 380	500	MJoeuu6lp4G7m5Q.exe	MJoeuu6lp4G7m5Q.exe
PID 500 wrote to memory of 380	500	MJoeuu6lp4G7m5Q.exe	MJoeuu6lp4G7m5Q.exe
PID 3020 wrote to memory of 1112	3020	Explorer.EXE	explorer.exe
PID 3020 wrote to memory of 1112	3020	Explorer.EXE	explorer.exe
PID 3020 wrote to memory of 1112	3020	Explorer.EXE	explorer.exe
PID 1112 wrote to memory of 2208	1112	explorer.exe	cmd.exe
PID 1112 wrote to memory of 2208	1112	explorer.exe	cmd.exe
PID 1112 wrote to memory of 2208	1112	explorer.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3020

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\PO_CG20210302346.js
2⤵
- Suspicious use of WriteProcessMemory
PID:2716

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\bXCJbnYyZT.js"
3⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:3320

C:\Users\Admin\AppData\Local\Temp\MJoeuu6lp4G7m5Q.exe
"C:\Users\Admin\AppData\Local\Temp\MJoeuu6lp4G7m5Q.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:500

C:\Users\Admin\AppData\Local\Temp\MJoeuu6lp4G7m5Q.exe
"C:\Users\Admin\AppData\Local\Temp\MJoeuu6lp4G7m5Q.exe"
4⤵
- Executes dropped EXE
PID:1160

C:\Users\Admin\AppData\Local\Temp\MJoeuu6lp4G7m5Q.exe
"C:\Users\Admin\AppData\Local\Temp\MJoeuu6lp4G7m5Q.exe"
4⤵
- Executes dropped EXE
PID:972

C:\Users\Admin\AppData\Local\Temp\MJoeuu6lp4G7m5Q.exe
"C:\Users\Admin\AppData\Local\Temp\MJoeuu6lp4G7m5Q.exe"
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:380

C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1112

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\MJoeuu6lp4G7m5Q.exe"
3⤵
PID:2208

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\MJoeuu6lp4G7m5Q.exe
MD5
81f24b219e4b7c29122243a7745e0d70

SHA1
162087ad805242265b42bb046696b39d1cd76f50

SHA256
3fa318a8ae6e6582155aa6dd984168f77a7f81b43f578c974fa3c4f5c7668da8

SHA512
315480c4d4a96c9b4c7d7bc80b96cd09ce5a5ad8a9a5edd2c435eca171a13278825d80d6c6de1d575388540ac2ef5820d1f0645221d6adc8702396a56662b5bb

Download Submit
C:\Users\Admin\AppData\Local\Temp\MJoeuu6lp4G7m5Q.exe
MD5
81f24b219e4b7c29122243a7745e0d70

SHA1
162087ad805242265b42bb046696b39d1cd76f50

SHA256
3fa318a8ae6e6582155aa6dd984168f77a7f81b43f578c974fa3c4f5c7668da8

SHA512
315480c4d4a96c9b4c7d7bc80b96cd09ce5a5ad8a9a5edd2c435eca171a13278825d80d6c6de1d575388540ac2ef5820d1f0645221d6adc8702396a56662b5bb

Download Submit
C:\Users\Admin\AppData\Local\Temp\MJoeuu6lp4G7m5Q.exe
MD5
81f24b219e4b7c29122243a7745e0d70

SHA1
162087ad805242265b42bb046696b39d1cd76f50

SHA256
3fa318a8ae6e6582155aa6dd984168f77a7f81b43f578c974fa3c4f5c7668da8

SHA512
315480c4d4a96c9b4c7d7bc80b96cd09ce5a5ad8a9a5edd2c435eca171a13278825d80d6c6de1d575388540ac2ef5820d1f0645221d6adc8702396a56662b5bb

Download Submit
C:\Users\Admin\AppData\Local\Temp\MJoeuu6lp4G7m5Q.exe
MD5
81f24b219e4b7c29122243a7745e0d70

SHA1
162087ad805242265b42bb046696b39d1cd76f50

SHA256
3fa318a8ae6e6582155aa6dd984168f77a7f81b43f578c974fa3c4f5c7668da8

SHA512
315480c4d4a96c9b4c7d7bc80b96cd09ce5a5ad8a9a5edd2c435eca171a13278825d80d6c6de1d575388540ac2ef5820d1f0645221d6adc8702396a56662b5bb

Download Submit
C:\Users\Admin\AppData\Local\Temp\MJoeuu6lp4G7m5Q.exe
MD5
81f24b219e4b7c29122243a7745e0d70

SHA1
162087ad805242265b42bb046696b39d1cd76f50

SHA256
3fa318a8ae6e6582155aa6dd984168f77a7f81b43f578c974fa3c4f5c7668da8

SHA512
315480c4d4a96c9b4c7d7bc80b96cd09ce5a5ad8a9a5edd2c435eca171a13278825d80d6c6de1d575388540ac2ef5820d1f0645221d6adc8702396a56662b5bb

Download Submit
C:\Users\Admin\AppData\Roaming\bXCJbnYyZT.js
MD5
9d628656a16fa431c6290136bec8395a

SHA1
abbc3359d13f5af4bb00b12e28f903bbfc2327f3

SHA256
7f8bc9fa4c2948c50e91f6606ca0140a29d726ad9ead11eccf92d6ac13cc19c4

SHA512
38f612d1211a1b15ad2f14f0ef2a19b7b8b04520aff9ae6b43133a4a87f81182a5b625302956a8fe193f7bbb43f6a89ac75280025399a1df404d04f271adcc72

Download Submit
memory/380-140-0x0000000000B00000-0x0000000000BAE000-memory.dmp

Filesize
696KB

Download
memory/380-135-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/380-138-0x0000000001090000-0x00000000013B0000-memory.dmp

Filesize
3.1MB

Download
memory/380-136-0x000000000041D480-mapping.dmp

Download
memory/500-131-0x0000000006750000-0x0000000006751000-memory.dmp

Filesize
4KB

Download
memory/500-127-0x00000000059B0000-0x00000000059B1000-memory.dmp

Filesize
4KB

Download
memory/500-126-0x00000000059E0000-0x00000000059E1000-memory.dmp

Filesize
4KB

Download
memory/500-132-0x00000000067F0000-0x0000000006848000-memory.dmp

Filesize
352KB

Download
memory/500-125-0x0000000005EE0000-0x0000000005EE1000-memory.dmp

Filesize
4KB

Download
memory/500-123-0x0000000000F60000-0x0000000000F61000-memory.dmp

Filesize
4KB

Download
memory/500-129-0x00000000059A0000-0x00000000059A8000-memory.dmp

Filesize
32KB

Download
memory/500-128-0x0000000005940000-0x0000000005941000-memory.dmp

Filesize
4KB

Download
memory/500-120-0x0000000000000000-mapping.dmp

Download
memory/500-130-0x00000000063E0000-0x00000000063E1000-memory.dmp

Filesize
4KB

Download
memory/1112-142-0x0000000000000000-mapping.dmp

Download
memory/1112-144-0x0000000000C20000-0x0000000000C49000-memory.dmp

Filesize
164KB

Download
memory/1112-143-0x0000000000E60000-0x000000000129F000-memory.dmp

Filesize
4.2MB

Download
memory/1112-145-0x00000000051B0000-0x00000000054D0000-memory.dmp

Filesize
3.1MB

Download
memory/1112-147-0x0000000004E70000-0x0000000004F00000-memory.dmp

Filesize
576KB

Download
memory/2208-146-0x0000000000000000-mapping.dmp

Download
memory/3020-141-0x0000000005F40000-0x00000000060B0000-memory.dmp

Filesize
1.4MB

Download
memory/3020-148-0x0000000006430000-0x000000000658C000-memory.dmp

Filesize
1.4MB

Download
memory/3320-118-0x0000000000000000-mapping.dmp

Download

pid	process
500	MJoeuu6lp4G7m5Q.exe
1160	MJoeuu6lp4G7m5Q.exe
972	MJoeuu6lp4G7m5Q.exe
380	MJoeuu6lp4G7m5Q.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads