strrat | 08fc942a3c8a9342e18e835316100440d441c36a613787bfc2010dc947362a95

Analysis

max time kernel
136s
max time network
146s
platform
windows10_x64
resource
win10v20210408
submitted
11-05-2021 14:23

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General

Target

1.js
Size

190KB
MD5

afa8a2405270564c521d461ad00122df
SHA1

61e8553d531aa7ab7005a8ab58f4b6fcd4583a1c
SHA256

08fc942a3c8a9342e18e835316100440d441c36a613787bfc2010dc947362a95
SHA512

c4bb09f1d540562767e6243f7542a3bffa07c5fe8e89ebc0b47bd035d8438e3ef655acf1dc3a514a6d8cee7a3a31bf0109046aa799fb3daed0cf21fdbe8e0fda

Score

10^/10

strrat persistence stealer trojan

Malware Config

Signatures

STRRAT
STRRAT is a remote access tool than can steal credentials and log keystrokes.
trojan stealer strrat
Drops startup file 1 IoCs

Processes:

java.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vggzmhulf.txt java.exe
Loads dropped DLL 2 IoCs

Processes:

java.exejava.exe

pid process

2992 java.exe
184 java.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vggzmhulf.txt	java.exe

pid	process
2992	java.exe
184	java.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

java.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\vggzmhulf = "\"C:\\Users\\Admin\\AppData\\Roaming\\vggzmhulf.txt\""	java.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\vggzmhulf = "\"C:\\Users\\Admin\\AppData\\Roaming\\vggzmhulf.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

3396 schtasks.exe

pid	process
3396	schtasks.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

wscript.exejavaw.exejava.execmd.exe

description	pid	process	target process
PID 624 wrote to memory of 3928	624	wscript.exe	javaw.exe
PID 624 wrote to memory of 3928	624	wscript.exe	javaw.exe
PID 3928 wrote to memory of 2992	3928	javaw.exe	java.exe
PID 3928 wrote to memory of 2992	3928	javaw.exe	java.exe
PID 2992 wrote to memory of 3952	2992	java.exe	cmd.exe
PID 2992 wrote to memory of 3952	2992	java.exe	cmd.exe
PID 2992 wrote to memory of 184	2992	java.exe	java.exe
PID 2992 wrote to memory of 184	2992	java.exe	java.exe
PID 3952 wrote to memory of 3396	3952	cmd.exe	schtasks.exe
PID 3952 wrote to memory of 3396	3952	cmd.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\1.js
1⤵
- Suspicious use of WriteProcessMemory
PID:624

C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe
"C:\Program Files\Java\jre1.8.0_66\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\vggzmhulf.txt"
2⤵
- Suspicious use of WriteProcessMemory
PID:3928

C:\Program Files\Java\jre1.8.0_66\bin\java.exe
"C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\vggzmhulf.txt"
3⤵
- Drops startup file
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2992

C:\Windows\SYSTEM32\cmd.exe
cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\vggzmhulf.txt"
4⤵
- Suspicious use of WriteProcessMemory
PID:3952

C:\Windows\system32\schtasks.exe
schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\vggzmhulf.txt"
5⤵
- Creates scheduled task(s)
PID:3396

C:\Program Files\Java\jre1.8.0_66\bin\java.exe
"C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\vggzmhulf.txt"
4⤵
- Loads dropped DLL
PID:184

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
C:\Users\Admin\.oracle_jre_usage\90737d32e3aba4b.timestamp
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna2441749816456733038.dll
MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-1594587808-2047097707-2163810515-1000\83aa4cc77f591dfc2374580bbd95f6ba_cc51e87d-bda7-4ef7-80cf-c431fec6b805
MD5
c8366ae350e7019aefc9d1e6e6a498c6

SHA1
5731d8a3e6568a5f2dfbbc87e3db9637df280b61

SHA256
11e6aca8e682c046c83b721eeb5c72c5ef03cb5936c60df6f4993511ddc61238

SHA512
33c980d5a638bfc791de291ebf4b6d263b384247ab27f261a54025108f2f85374b579a026e545f81395736dd40fa4696f2163ca17640dd47f1c42bc9971b18cd

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\vggzmhulf.txt
MD5
3b098ed6aa7c3b342772a135129afebd

SHA1
f5b5e634b40d0a043c77f48a259dab9b5eea1f5b

SHA256
4a4a333147eb03fa0bfb7d0f03b37585669e4d056d63d31beecbb56eafc80c91

SHA512
56157f4c0168098877927c46334ac6f1236d18147ad331797152d71a3281d5e2d7bf24c5b0609f868cbf94ec978f6f4e91d882f596e7a97605bd42d4f619e98f

Download Submit
C:\Users\Admin\AppData\Roaming\vggzmhulf.txt
MD5
3b098ed6aa7c3b342772a135129afebd

SHA1
f5b5e634b40d0a043c77f48a259dab9b5eea1f5b

SHA256
4a4a333147eb03fa0bfb7d0f03b37585669e4d056d63d31beecbb56eafc80c91

SHA512
56157f4c0168098877927c46334ac6f1236d18147ad331797152d71a3281d5e2d7bf24c5b0609f868cbf94ec978f6f4e91d882f596e7a97605bd42d4f619e98f

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
C:\Users\Admin\vggzmhulf.txt
MD5
3b098ed6aa7c3b342772a135129afebd

SHA1
f5b5e634b40d0a043c77f48a259dab9b5eea1f5b

SHA256
4a4a333147eb03fa0bfb7d0f03b37585669e4d056d63d31beecbb56eafc80c91

SHA512
56157f4c0168098877927c46334ac6f1236d18147ad331797152d71a3281d5e2d7bf24c5b0609f868cbf94ec978f6f4e91d882f596e7a97605bd42d4f619e98f

Download Submit
\Users\Admin\AppData\Local\Temp\jna-63116079\jna2441749816456733038.dll
MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
\Users\Admin\AppData\Local\Temp\jna-63116079\jna5322399264752886464.dll
MD5
e02979ecd43bcc9061eb2b494ab5af50

SHA1
3122ac0e751660f646c73b10c4f79685aa65c545

SHA256
a66959bec2ef5af730198db9f3b3f7cab0d4ae70ce01bec02bf1d738e6d1ee7a

SHA512
1e6f7dcb6a557c9b896412a48dd017c16f7a52fa2b9ab513593c9ecd118e86083979821ca7a3e2f098ee349200c823c759cec6599740dd391cb5f354dc29b372

Download Submit
memory/184-230-0x0000000002ED0000-0x0000000003140000-memory.dmp

Filesize
2.4MB

Download
memory/184-231-0x0000000000BD0000-0x0000000000BD1000-memory.dmp

Filesize
4KB

Download
memory/184-232-0x0000000003140000-0x0000000003150000-memory.dmp

Filesize
64KB

Download
memory/184-236-0x0000000003150000-0x0000000003160000-memory.dmp

Filesize
64KB

Download
memory/184-238-0x0000000003170000-0x0000000003180000-memory.dmp

Filesize
64KB

Download
memory/184-237-0x0000000003160000-0x0000000003170000-memory.dmp

Filesize
64KB

Download
memory/184-244-0x00000000031C0000-0x00000000031D0000-memory.dmp

Filesize
64KB

Download
memory/184-243-0x00000000031B0000-0x00000000031C0000-memory.dmp

Filesize
64KB

Download
memory/184-211-0x0000000000000000-mapping.dmp

Download
memory/184-242-0x00000000031A0000-0x00000000031B0000-memory.dmp

Filesize
64KB

Download
memory/184-241-0x0000000003190000-0x00000000031A0000-memory.dmp

Filesize
64KB

Download
memory/184-240-0x0000000003180000-0x0000000003190000-memory.dmp

Filesize
64KB

Download
memory/2992-205-0x0000000003650000-0x0000000003660000-memory.dmp

Filesize
64KB

Download
memory/2992-191-0x0000000000000000-mapping.dmp

Download
memory/2992-204-0x00000000014B0000-0x00000000014B1000-memory.dmp

Filesize
4KB

Download
memory/2992-203-0x0000000003640000-0x0000000003650000-memory.dmp

Filesize
64KB

Download
memory/2992-200-0x00000000014B0000-0x00000000014B1000-memory.dmp

Filesize
4KB

Download
memory/2992-199-0x00000000033D0000-0x0000000003640000-memory.dmp

Filesize
2.4MB

Download
memory/2992-213-0x0000000003670000-0x0000000003680000-memory.dmp

Filesize
64KB

Download
memory/2992-212-0x0000000003660000-0x0000000003670000-memory.dmp

Filesize
64KB

Download
memory/2992-215-0x0000000003690000-0x00000000036A0000-memory.dmp

Filesize
64KB

Download
memory/2992-216-0x00000000014B0000-0x00000000014B1000-memory.dmp

Filesize
4KB

Download
memory/2992-214-0x0000000003680000-0x0000000003690000-memory.dmp

Filesize
64KB

Download
memory/3396-224-0x0000000000000000-mapping.dmp

Download
memory/3928-155-0x0000000003170000-0x0000000003180000-memory.dmp

Filesize
64KB

Download
memory/3928-168-0x0000000003180000-0x0000000003190000-memory.dmp

Filesize
64KB

Download
memory/3928-187-0x00000000031F0000-0x0000000003200000-memory.dmp

Filesize
64KB

Download
memory/3928-192-0x0000000000F20000-0x0000000000F21000-memory.dmp

Filesize
4KB

Download
memory/3928-186-0x00000000031E0000-0x00000000031F0000-memory.dmp

Filesize
64KB

Download
memory/3928-185-0x0000000000F20000-0x0000000000F21000-memory.dmp

Filesize
4KB

Download
memory/3928-184-0x00000000031D0000-0x00000000031E0000-memory.dmp

Filesize
64KB

Download
memory/3928-183-0x0000000003210000-0x0000000003220000-memory.dmp

Filesize
64KB

Download
memory/3928-181-0x00000000031C0000-0x00000000031D0000-memory.dmp

Filesize
64KB

Download
memory/3928-182-0x0000000000F20000-0x0000000000F21000-memory.dmp

Filesize
4KB

Download
memory/3928-180-0x0000000003200000-0x0000000003210000-memory.dmp

Filesize
64KB

Download
memory/3928-179-0x0000000000F20000-0x0000000000F21000-memory.dmp

Filesize
4KB

Download
memory/3928-177-0x0000000000F20000-0x0000000000F21000-memory.dmp

Filesize
4KB

Download
memory/3928-178-0x00000000031B0000-0x00000000031C0000-memory.dmp

Filesize
64KB

Download
memory/3928-176-0x00000000031A0000-0x00000000031B0000-memory.dmp

Filesize
64KB

Download
memory/3928-175-0x0000000003190000-0x00000000031A0000-memory.dmp

Filesize
64KB

Download
memory/3928-174-0x0000000000F20000-0x0000000000F21000-memory.dmp

Filesize
4KB

Download
memory/3928-171-0x0000000000F20000-0x0000000000F21000-memory.dmp

Filesize
4KB

Download
memory/3928-172-0x0000000000F20000-0x0000000000F21000-memory.dmp

Filesize
4KB

Download
memory/3928-170-0x0000000000F20000-0x0000000000F21000-memory.dmp

Filesize
4KB

Download
memory/3928-116-0x0000000002E00000-0x0000000003070000-memory.dmp

Filesize
2.4MB

Download
memory/3928-188-0x0000000000F20000-0x0000000000F21000-memory.dmp

Filesize
4KB

Download
memory/3928-167-0x0000000000F20000-0x0000000000F21000-memory.dmp

Filesize
4KB

Download
memory/3928-153-0x0000000003160000-0x0000000003170000-memory.dmp

Filesize
64KB

Download
memory/3928-114-0x0000000000000000-mapping.dmp

Download
memory/3928-151-0x0000000003150000-0x0000000003160000-memory.dmp

Filesize
64KB

Download
memory/3928-149-0x0000000003140000-0x0000000003150000-memory.dmp

Filesize
64KB

Download
memory/3928-147-0x0000000003130000-0x0000000003140000-memory.dmp

Filesize
64KB

Download
memory/3928-145-0x0000000000F20000-0x0000000000F21000-memory.dmp

Filesize
4KB

Download
memory/3928-131-0x00000000030F0000-0x0000000003100000-memory.dmp

Filesize
64KB

Download
memory/3928-132-0x0000000003100000-0x0000000003110000-memory.dmp

Filesize
64KB

Download
memory/3928-130-0x00000000030E0000-0x00000000030F0000-memory.dmp

Filesize
64KB

Download
memory/3928-129-0x0000000003120000-0x0000000003130000-memory.dmp

Filesize
64KB

Download
memory/3928-127-0x0000000003110000-0x0000000003120000-memory.dmp

Filesize
64KB

Download
memory/3928-126-0x00000000030D0000-0x00000000030E0000-memory.dmp

Filesize
64KB

Download
memory/3928-122-0x0000000003090000-0x00000000030A0000-memory.dmp

Filesize
64KB

Download
memory/3928-125-0x00000000030C0000-0x00000000030D0000-memory.dmp

Filesize
64KB

Download
memory/3928-124-0x00000000030B0000-0x00000000030C0000-memory.dmp

Filesize
64KB

Download
memory/3928-123-0x00000000030A0000-0x00000000030B0000-memory.dmp

Filesize
64KB

Download
memory/3928-121-0x0000000000F20000-0x0000000000F21000-memory.dmp

Filesize
4KB

Download
memory/3928-119-0x0000000003070000-0x0000000003080000-memory.dmp

Filesize
64KB

Download
memory/3928-120-0x0000000003080000-0x0000000003090000-memory.dmp

Filesize
64KB

Download
memory/3928-117-0x0000000000F20000-0x0000000000F21000-memory.dmp

Filesize
4KB

Download
memory/3952-210-0x0000000000000000-mapping.dmp

Download