strrat | 9f3abf6dd5ae995b5e1d5cdd6457ab61a95fa689b5fbac4c57916a547e1d3c5a

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-en-20211104
submitted
02-12-2021 08:43

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General

Target

PO202104-114.js
Size

202KB
MD5

4f7a5f22ef09e3fd02fc432d51ba12db
SHA1

bc55e8c16a3135feb3a0acb9a0e72e48e59e12df
SHA256

9f3abf6dd5ae995b5e1d5cdd6457ab61a95fa689b5fbac4c57916a547e1d3c5a
SHA512

bd59013fcd969385f455e371b3317a912b1330cd1af87201af863ac0a3f0e8872846b7cf8fccbc87986151f9694393720ee9e7a43933c2c137a0729447513128

Score

10^/10

strrat vjw0rm persistence stealer trojan worm

Malware Config

Signatures

STRRAT
STRRAT is a remote access tool than can steal credentials and log keystrokes.
trojan stealer strrat
Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
Blocklisted process makes network request 7 IoCs

Processes:

WScript.exe

flow pid process

5 572 WScript.exe
14 572 WScript.exe
15 572 WScript.exe
19 572 WScript.exe
20 572 WScript.exe
21 572 WScript.exe
23 572 WScript.exe

flow	pid	process
5	572	WScript.exe
14	572	WScript.exe
15	572	WScript.exe
19	572	WScript.exe
20	572	WScript.exe
21	572	WScript.exe
23	572	WScript.exe

Drops startup file 3 IoCs

Processes:

WScript.exejava.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\uxPZcaKnkC.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\uxPZcaKnkC.js	WScript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jjsbkjxyda.txt	java.exe

Loads dropped DLL 2 IoCs

Processes:

java.exejava.exe

pid process

1172 java.exe
472 java.exe

pid	process
1172	java.exe
472	java.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

WScript.exejava.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Windows\CurrentVersion\Run	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\uxPZcaKnkC.js\""	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-103686315-404690609-2047157615-1000\Software\Microsoft\Windows\CurrentVersion\Run\jjsbkjxyda = "\"C:\\Users\\Admin\\AppData\\Roaming\\jjsbkjxyda.txt\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\jjsbkjxyda = "\"C:\\Users\\Admin\\AppData\\Roaming\\jjsbkjxyda.txt\""	java.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

1624 schtasks.exe

pid	process
1624	schtasks.exe

Suspicious use of AdjustPrivilegeToken 20 IoCs

Processes:

WMIC.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1000	WMIC.exe
Token: SeSecurityPrivilege	1000	WMIC.exe
Token: SeTakeOwnershipPrivilege	1000	WMIC.exe
Token: SeLoadDriverPrivilege	1000	WMIC.exe
Token: SeSystemProfilePrivilege	1000	WMIC.exe
Token: SeSystemtimePrivilege	1000	WMIC.exe
Token: SeProfSingleProcessPrivilege	1000	WMIC.exe
Token: SeIncBasePriorityPrivilege	1000	WMIC.exe
Token: SeCreatePagefilePrivilege	1000	WMIC.exe
Token: SeBackupPrivilege	1000	WMIC.exe
Token: SeRestorePrivilege	1000	WMIC.exe
Token: SeShutdownPrivilege	1000	WMIC.exe
Token: SeDebugPrivilege	1000	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1000	WMIC.exe
Token: SeRemoteShutdownPrivilege	1000	WMIC.exe
Token: SeUndockPrivilege	1000	WMIC.exe
Token: SeManageVolumePrivilege	1000	WMIC.exe
Token: 33	1000	WMIC.exe
Token: 34	1000	WMIC.exe
Token: 35	1000	WMIC.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

wscript.exejavaw.exejava.execmd.exejava.execmd.exe

description	pid	process	target process
PID 524 wrote to memory of 572	524	wscript.exe	WScript.exe
PID 524 wrote to memory of 572	524	wscript.exe	WScript.exe
PID 524 wrote to memory of 572	524	wscript.exe	WScript.exe
PID 524 wrote to memory of 1120	524	wscript.exe	javaw.exe
PID 524 wrote to memory of 1120	524	wscript.exe	javaw.exe
PID 524 wrote to memory of 1120	524	wscript.exe	javaw.exe
PID 1120 wrote to memory of 1172	1120	javaw.exe	java.exe
PID 1120 wrote to memory of 1172	1120	javaw.exe	java.exe
PID 1120 wrote to memory of 1172	1120	javaw.exe	java.exe
PID 1172 wrote to memory of 240	1172	java.exe	cmd.exe
PID 1172 wrote to memory of 240	1172	java.exe	cmd.exe
PID 1172 wrote to memory of 240	1172	java.exe	cmd.exe
PID 1172 wrote to memory of 472	1172	java.exe	java.exe
PID 1172 wrote to memory of 472	1172	java.exe	java.exe
PID 1172 wrote to memory of 472	1172	java.exe	java.exe
PID 240 wrote to memory of 1624	240	cmd.exe	schtasks.exe
PID 240 wrote to memory of 1624	240	cmd.exe	schtasks.exe
PID 240 wrote to memory of 1624	240	cmd.exe	schtasks.exe
PID 472 wrote to memory of 1796	472	java.exe	cmd.exe
PID 472 wrote to memory of 1796	472	java.exe	cmd.exe
PID 472 wrote to memory of 1796	472	java.exe	cmd.exe
PID 1796 wrote to memory of 1000	1796	cmd.exe	WMIC.exe
PID 1796 wrote to memory of 1000	1796	cmd.exe	WMIC.exe
PID 1796 wrote to memory of 1000	1796	cmd.exe	WMIC.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\PO202104-114.js
1⤵
- Suspicious use of WriteProcessMemory
PID:524

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\uxPZcaKnkC.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:572

C:\Program Files\Java\jre7\bin\javaw.exe
"C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\jjsbkjxyda.txt"
2⤵
- Suspicious use of WriteProcessMemory
PID:1120

C:\Program Files\Java\jre7\bin\java.exe
"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\jjsbkjxyda.txt"
3⤵
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1172

C:\Program Files\Java\jre7\bin\java.exe
"C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\jjsbkjxyda.txt"
4⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:472

C:\Windows\system32\cmd.exe
cmd.exe /c "wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list"
5⤵
- Suspicious use of WriteProcessMemory
PID:1796

C:\Windows\System32\Wbem\WMIC.exe
wmic /node:. /namespace:'\\root\cimv2' path win32_logicaldisk get volumeserialnumber /format:list
6⤵
- Suspicious use of AdjustPrivilegeToken
PID:1000

C:\Windows\system32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\jjsbkjxyda.txt"
4⤵
- Suspicious use of WriteProcessMemory
PID:240

C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\jjsbkjxyda.txt"
5⤵
- Creates scheduled task(s)
PID:1624

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna5010677909353711661.dll
MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-103686315-404690609-2047157615-1000\83aa4cc77f591dfc2374580bbd95f6ba_b9d440b4-6805-4743-9d27-9cb5fc4d9db0
MD5
c8366ae350e7019aefc9d1e6e6a498c6

SHA1
5731d8a3e6568a5f2dfbbc87e3db9637df280b61

SHA256
11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

SHA512
33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

Download Submit
C:\Users\Admin\AppData\Roaming\jjsbkjxyda.txt
MD5
e5c57969a139fa14269758cb8cc8f9a7

SHA1
432f65c2b1da28b421eac3956d8cefd72f04ae6a

SHA256
b2b661ff89ba10a5a27a06df63a9ffd158b254aff5f38a96ff5c1f6344959501

SHA512
526f7f1717488c87457353d78480ec590d5abf5bf6bdc697dc92433c26a949c649b94bd83cfc7891c24fbc5e96414793fb9a192f77a3ded9ad434d8524a215d5

Download Submit
C:\Users\Admin\AppData\Roaming\jjsbkjxyda.txt
MD5
e5c57969a139fa14269758cb8cc8f9a7

SHA1
432f65c2b1da28b421eac3956d8cefd72f04ae6a

SHA256
b2b661ff89ba10a5a27a06df63a9ffd158b254aff5f38a96ff5c1f6344959501

SHA512
526f7f1717488c87457353d78480ec590d5abf5bf6bdc697dc92433c26a949c649b94bd83cfc7891c24fbc5e96414793fb9a192f77a3ded9ad434d8524a215d5

Download Submit
C:\Users\Admin\AppData\Roaming\lib\jna-5.5.0.jar
MD5
acfb5b5fd9ee10bf69497792fd469f85

SHA1
0e0845217c4907822403912ad6828d8e0b256208

SHA256
b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

SHA512
e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

Download Submit
C:\Users\Admin\AppData\Roaming\lib\jna-platform-5.5.0.jar
MD5
2f4a99c2758e72ee2b59a73586a2322f

SHA1
af38e7c4d0fc73c23ecd785443705bfdee5b90bf

SHA256
24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

SHA512
b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

Download Submit
C:\Users\Admin\AppData\Roaming\lib\sqlite-jdbc-3.14.2.1.jar
MD5
b33387e15ab150a7bf560abdc73c3bec

SHA1
66b8075784131f578ef893fd7674273f709b9a4c

SHA256
2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491

SHA512
25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

Download Submit
C:\Users\Admin\AppData\Roaming\lib\system-hook-3.5.jar
MD5
e1aa38a1e78a76a6de73efae136cdb3a

SHA1
c463da71871f780b2e2e5dba115d43953b537daf

SHA256
2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

SHA512
fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

Download Submit
C:\Users\Admin\AppData\Roaming\uxPZcaKnkC.js
MD5
544e461cc49cb88916002eb81569f0ad

SHA1
2a5325d45b84e12126b2cc8766cc9741d79d0c3f

SHA256
88044969fcfb1bfd231ba53e225d4682696e53c5ce194d111968bde11b4c85ac

SHA512
9ec912681fd6047c1642f1b8737615fd6ea7101b2de8c3dbd1ba98437204b39f9d443d7bda887871f85a293d6134f33704c7e05ed04fb7506b4773fa536d0651

Download Submit
C:\Users\Admin\jjsbkjxyda.txt
MD5
e5c57969a139fa14269758cb8cc8f9a7

SHA1
432f65c2b1da28b421eac3956d8cefd72f04ae6a

SHA256
b2b661ff89ba10a5a27a06df63a9ffd158b254aff5f38a96ff5c1f6344959501

SHA512
526f7f1717488c87457353d78480ec590d5abf5bf6bdc697dc92433c26a949c649b94bd83cfc7891c24fbc5e96414793fb9a192f77a3ded9ad434d8524a215d5

Download Submit
C:\Users\Admin\lib\jna-5.5.0.jar
MD5
acfb5b5fd9ee10bf69497792fd469f85

SHA1
0e0845217c4907822403912ad6828d8e0b256208

SHA256
b308faebfe4ed409de8410e0a632d164b2126b035f6eacff968d3908cafb4d9e

SHA512
e52575f58a195ceb3bd16b9740eadf5bc5b1d4d63c0734e8e5fd1d1776aa2d068d2e4c7173b83803f95f72c0a6759ae1c9b65773c734250d4cfcdf47a19f82aa

Download Submit
C:\Users\Admin\lib\jna-platform-5.5.0.jar
MD5
2f4a99c2758e72ee2b59a73586a2322f

SHA1
af38e7c4d0fc73c23ecd785443705bfdee5b90bf

SHA256
24d81621f82ac29fcdd9a74116031f5907a2343158e616f4573bbfa2434ae0d5

SHA512
b860459a0d3bf7ccb600a03aa1d2ac0358619ee89b2b96ed723541e182b6fdab53aefef7992acb4e03fca67aa47cbe3907b1e6060a60b57ed96c4e00c35c7494

Download Submit
C:\Users\Admin\lib\sqlite-jdbc-3.14.2.1.jar
MD5
b33387e15ab150a7bf560abdc73c3bec

SHA1
66b8075784131f578ef893fd7674273f709b9a4c

SHA256
2eae3dea1c3dde6104c49f9601074b6038ff6abcf3be23f4b56f6720a4f6a491

SHA512
25cfb0d6ce35d0bcb18527d3aa12c63ecb2d9c1b8b78805d1306e516c13480b79bb0d74730aa93bd1752f9ac2da9fdd51781c48844cea2fd52a06c62852c8279

Download Submit
C:\Users\Admin\lib\system-hook-3.5.jar
MD5
e1aa38a1e78a76a6de73efae136cdb3a

SHA1
c463da71871f780b2e2e5dba115d43953b537daf

SHA256
2ddda8af6faef8bde46acf43ec546603180bcf8dcb2e5591fff8ac9cd30b5609

SHA512
fee16fe9364926ec337e52f551fd62ed81984808a847de2fd68ff29b6c5da0dcc04ef6d8977f0fe675662a7d2ea1065cdcdd2a5259446226a7c7c5516bd7d60d

Download Submit
\Users\Admin\AppData\Local\Temp\jna-63116079\jna5010677909353711661.dll
MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
\Users\Admin\AppData\Local\Temp\jna-63116079\jna6788677925781557634.dll
MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
memory/240-93-0x0000000000000000-mapping.dmp

Download
memory/472-101-0x0000000002190000-0x0000000002400000-memory.dmp

Filesize
2.4MB

Download
memory/472-94-0x0000000000000000-mapping.dmp

Download
memory/472-139-0x0000000001D70000-0x0000000001D71000-memory.dmp

Filesize
4KB

Download
memory/472-138-0x0000000001D70000-0x0000000001D71000-memory.dmp

Filesize
4KB

Download
memory/472-137-0x0000000001D70000-0x0000000001D71000-memory.dmp

Filesize
4KB

Download
memory/472-109-0x0000000001D70000-0x0000000001D71000-memory.dmp

Filesize
4KB

Download
memory/472-100-0x0000000001D70000-0x0000000001D71000-memory.dmp

Filesize
4KB

Download
memory/524-55-0x000007FEFB7D1000-0x000007FEFB7D3000-memory.dmp

Filesize
8KB

Download
memory/572-56-0x0000000000000000-mapping.dmp

Download
memory/1000-141-0x0000000000000000-mapping.dmp

Download
memory/1120-81-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1120-68-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1120-63-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1120-62-0x0000000002300000-0x0000000002570000-memory.dmp

Filesize
2.4MB

Download
memory/1120-69-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1120-72-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1120-73-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1120-65-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1120-67-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1120-71-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1120-58-0x0000000000000000-mapping.dmp

Download
memory/1120-61-0x0000000002300000-0x0000000002570000-memory.dmp

Filesize
2.4MB

Download
memory/1120-79-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/1172-80-0x0000000000000000-mapping.dmp

Download
memory/1172-86-0x0000000002250000-0x00000000024C0000-memory.dmp

Filesize
2.4MB

Download
memory/1172-85-0x0000000000130000-0x0000000000131000-memory.dmp

Filesize
4KB

Download
memory/1172-95-0x0000000000130000-0x0000000000131000-memory.dmp

Filesize
4KB

Download
memory/1624-99-0x0000000000000000-mapping.dmp

Download
memory/1796-140-0x0000000000000000-mapping.dmp

Download