f8c90860de66f312c9757ff5fb6e80e020ed9a5fa7d4ab8082618935f37b3e7d

Analysis

max time kernel
106s
max time network
121s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
27-11-2022 19:27

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General

Target

f8c90860de66f312c9757ff5fb6e80e020ed9a5fa7d4ab8082618935f37b3e7d.exe
Size

48KB
MD5

aed2f43c71e7de88cebd986a316cf72f
SHA1

c0d6071086d67ae69dea0da273cee8db41191461
SHA256

f8c90860de66f312c9757ff5fb6e80e020ed9a5fa7d4ab8082618935f37b3e7d
SHA512

e6b8e11e26c2121130e51c941813e528d3360d83443d40a7df9af96df6b59cc7bc9e5a6f20a192939a83f5b9415c3ea5ed4cfcdcff167421122f880c0d26ff29
SSDEEP

768:AUyjC5jDpaBrHokBnSI2Qg43HHOMceAaFl65Twm7n:TjoBrHofXQg43nOMcyFl6j

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1184	SRDSL.exe

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SRDSL\Parameters\ServiceDll = "C:\\Users\\Admin\\AppData\\Local\\Temp\\7088763.dll"	f8c90860de66f312c9757ff5fb6e80e020ed9a5fa7d4ab8082618935f37b3e7d.exe

Deletes itself 1 IoCs

pid	Process
1124	cmd.exe

Loads dropped DLL 7 IoCs

pid	Process
112	f8c90860de66f312c9757ff5fb6e80e020ed9a5fa7d4ab8082618935f37b3e7d.exe
1080	svchost.exe
1080	svchost.exe
1184	SRDSL.exe
1184	SRDSL.exe
1184	SRDSL.exe
1184	SRDSL.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\SRDSL.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\SRDSL.exe	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2040	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
112	f8c90860de66f312c9757ff5fb6e80e020ed9a5fa7d4ab8082618935f37b3e7d.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	112	f8c90860de66f312c9757ff5fb6e80e020ed9a5fa7d4ab8082618935f37b3e7d.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
112	f8c90860de66f312c9757ff5fb6e80e020ed9a5fa7d4ab8082618935f37b3e7d.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 112 wrote to memory of 1124	112	f8c90860de66f312c9757ff5fb6e80e020ed9a5fa7d4ab8082618935f37b3e7d.exe	29
PID 112 wrote to memory of 1124	112	f8c90860de66f312c9757ff5fb6e80e020ed9a5fa7d4ab8082618935f37b3e7d.exe	29
PID 112 wrote to memory of 1124	112	f8c90860de66f312c9757ff5fb6e80e020ed9a5fa7d4ab8082618935f37b3e7d.exe	29
PID 112 wrote to memory of 1124	112	f8c90860de66f312c9757ff5fb6e80e020ed9a5fa7d4ab8082618935f37b3e7d.exe	29
PID 1124 wrote to memory of 2040	1124	cmd.exe	31
PID 1124 wrote to memory of 2040	1124	cmd.exe	31
PID 1124 wrote to memory of 2040	1124	cmd.exe	31
PID 1124 wrote to memory of 2040	1124	cmd.exe	31
PID 1080 wrote to memory of 1184	1080	svchost.exe	32
PID 1080 wrote to memory of 1184	1080	svchost.exe	32
PID 1080 wrote to memory of 1184	1080	svchost.exe	32
PID 1080 wrote to memory of 1184	1080	svchost.exe	32

C:\Users\Admin\AppData\Local\Temp\f8c90860de66f312c9757ff5fb6e80e020ed9a5fa7d4ab8082618935f37b3e7d.exe
"C:\Users\Admin\AppData\Local\Temp\f8c90860de66f312c9757ff5fb6e80e020ed9a5fa7d4ab8082618935f37b3e7d.exe"
1⤵
- Sets DLL path for service in the registry
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:112
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ping 127.0.0.1 -n 1 && del /f/q "C:\Users\Admin\AppData\Local\Temp\f8c90860de66f312c9757ff5fb6e80e020ed9a5fa7d4ab8082618935f37b3e7d.exe"
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1124
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 1
    3⤵
    - Runs ping.exe
    PID:2040

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
1⤵
PID:1116

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k "SRDSL"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1080
- C:\Windows\SysWOW64\SRDSL.exe
  C:\Windows\system32\SRDSL.exe "c:\users\admin\appdata\local\temp\7088763.dll",MainThread
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:1184

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\SRDSL.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
C:\Windows\SysWOW64\SRDSL.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
\??\c:\users\admin\appdata\local\temp\7088763.dll

Filesize
26KB

MD5
c9e74330bd70b2a59e17c54046025e19

SHA1
df6e031f70fee8b49ca652476fd5fae95d7f924e

SHA256
4f4bf6d2ffac1ce644e5270ea0e48d595ab33cad30f4c3d906c244e5bf8395c7

SHA512
bed08e399a43a383e7348477eb048c5452a5da6d5305b23054aeb6d906f36265a838df8e1c643d165693c3667ac3db85deabf0fdeb5794f709ec171c5c621649

Download Submit
\Users\Admin\AppData\Local\Temp\7088763.dll

Filesize
26KB

MD5
c9e74330bd70b2a59e17c54046025e19

SHA1
df6e031f70fee8b49ca652476fd5fae95d7f924e

SHA256
4f4bf6d2ffac1ce644e5270ea0e48d595ab33cad30f4c3d906c244e5bf8395c7

SHA512
bed08e399a43a383e7348477eb048c5452a5da6d5305b23054aeb6d906f36265a838df8e1c643d165693c3667ac3db85deabf0fdeb5794f709ec171c5c621649

Download Submit
\Users\Admin\AppData\Local\Temp\7088763.dll

Filesize
26KB

MD5
c9e74330bd70b2a59e17c54046025e19

SHA1
df6e031f70fee8b49ca652476fd5fae95d7f924e

SHA256
4f4bf6d2ffac1ce644e5270ea0e48d595ab33cad30f4c3d906c244e5bf8395c7

SHA512
bed08e399a43a383e7348477eb048c5452a5da6d5305b23054aeb6d906f36265a838df8e1c643d165693c3667ac3db85deabf0fdeb5794f709ec171c5c621649

Download Submit
\Users\Admin\AppData\Local\Temp\7088763.dll

Filesize
26KB

MD5
c9e74330bd70b2a59e17c54046025e19

SHA1
df6e031f70fee8b49ca652476fd5fae95d7f924e

SHA256
4f4bf6d2ffac1ce644e5270ea0e48d595ab33cad30f4c3d906c244e5bf8395c7

SHA512
bed08e399a43a383e7348477eb048c5452a5da6d5305b23054aeb6d906f36265a838df8e1c643d165693c3667ac3db85deabf0fdeb5794f709ec171c5c621649

Download Submit
\Users\Admin\AppData\Local\Temp\7088763.dll

Filesize
26KB

MD5
c9e74330bd70b2a59e17c54046025e19

SHA1
df6e031f70fee8b49ca652476fd5fae95d7f924e

SHA256
4f4bf6d2ffac1ce644e5270ea0e48d595ab33cad30f4c3d906c244e5bf8395c7

SHA512
bed08e399a43a383e7348477eb048c5452a5da6d5305b23054aeb6d906f36265a838df8e1c643d165693c3667ac3db85deabf0fdeb5794f709ec171c5c621649

Download Submit
\Users\Admin\AppData\Local\Temp\7088763.dll

Filesize
26KB

MD5
c9e74330bd70b2a59e17c54046025e19

SHA1
df6e031f70fee8b49ca652476fd5fae95d7f924e

SHA256
4f4bf6d2ffac1ce644e5270ea0e48d595ab33cad30f4c3d906c244e5bf8395c7

SHA512
bed08e399a43a383e7348477eb048c5452a5da6d5305b23054aeb6d906f36265a838df8e1c643d165693c3667ac3db85deabf0fdeb5794f709ec171c5c621649

Download Submit
\Users\Admin\AppData\Local\Temp\7088763.dll

Filesize
26KB

MD5
c9e74330bd70b2a59e17c54046025e19

SHA1
df6e031f70fee8b49ca652476fd5fae95d7f924e

SHA256
4f4bf6d2ffac1ce644e5270ea0e48d595ab33cad30f4c3d906c244e5bf8395c7

SHA512
bed08e399a43a383e7348477eb048c5452a5da6d5305b23054aeb6d906f36265a838df8e1c643d165693c3667ac3db85deabf0fdeb5794f709ec171c5c621649

Download Submit
\Windows\SysWOW64\SRDSL.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
memory/112-54-0x0000000074C11000-0x0000000074C13000-memory.dmp

Filesize
8KB

Download