c78d7e44e0997c3dc22b3a81ce8964e4069ce2dceb020dbfacad153d2e9a4e82

Analysis

max time kernel
145s
max time network
149s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
25/12/2022, 11:48

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General

Target
4a75f7dda9143bb7d91023698154c3b6.exe
Size 6.4MB
Sample221225-nyfc4abe22
SHA256 c78d7e44e0997c3dc22b3a81ce8964e4069ce2dceb020dbfacad153d2e9a4e82
MD5 4a75f7dda9143bb7d91023698154c3b6
SHA1 75474a0111a61ec35fc3a2138a9bfb00a066fb6b
SHA512 3e0fb0b6176b833d1ffe26d3b39d373e8c4725fd69a0182441a544a7d68b3693b7b6da434cd6b452ce709c603e293d29fa3c904791a56c4b029b5c230504235b
SSDEEP 196608:t7n9Rg39ZnwUTA7/T0R7aYERaXmH1YNXc:tzTYZntTak7a9ILN
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2008	svcupdater.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

pid	Process
1104	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1196	4a75f7dda9143bb7d91023698154c3b6.exe
2008	svcupdater.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1196 wrote to memory of 1104	1196	4a75f7dda9143bb7d91023698154c3b6.exe	27
PID 1196 wrote to memory of 1104	1196	4a75f7dda9143bb7d91023698154c3b6.exe	27
PID 1196 wrote to memory of 1104	1196	4a75f7dda9143bb7d91023698154c3b6.exe	27
PID 1196 wrote to memory of 1104	1196	4a75f7dda9143bb7d91023698154c3b6.exe	27
PID 2040 wrote to memory of 2008	2040	taskeng.exe	30
PID 2040 wrote to memory of 2008	2040	taskeng.exe	30
PID 2040 wrote to memory of 2008	2040	taskeng.exe	30
PID 2040 wrote to memory of 2008	2040	taskeng.exe	30
PID 2040 wrote to memory of 2008	2040	taskeng.exe	30
PID 2040 wrote to memory of 2008	2040	taskeng.exe	30
PID 2040 wrote to memory of 2008	2040	taskeng.exe	30

C:\Users\Admin\AppData\Local\Temp\4a75f7dda9143bb7d91023698154c3b6.exe
"C:\Users\Admin\AppData\Local\Temp\4a75f7dda9143bb7d91023698154c3b6.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /tn "svcupdater" /tr "C:\Users\Admin\AppData\Roaming\Win32Sync\svcupdater.exe" /st 00:00 /du 9999:59 /sc once /ri 1 /f
  2⤵
  - Creates scheduled task(s)
  PID:1104

C:\Windows\system32\taskeng.exe
taskeng.exe {0EECDE02-71B7-4572-9714-591760F9AA0C} S-1-5-21-3845472200-3839195424-595303356-1000:ZERMMMDR\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Users\Admin\AppData\Roaming\Win32Sync\svcupdater.exe
  C:\Users\Admin\AppData\Roaming\Win32Sync\svcupdater.exe
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:2008

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

svcupdater.exe

Path C:\Users\Admin\AppData\Roaming\Win32Sync\svcupdater.exe
Size 664.1MB
SHA256 73e8b4aaa4df24141f1b4b83e2c6eca9110470a34173c849ab61f9b239f13c23
MD5 7d1d5e1e4adce06e27e7291582cd2067
SHA1 44c407ec1eb8b4f87b0096f4b2293219e107ecfb
SHA512 49ff20a630c4a4badc243b03e63dce091bbccb42cf0bf9de52d7ba4a689ebf0fb80e14e241bdcdb09a2e17a62b09e06d3eb07bab5813a0cdf4a55181e58e42a8
SSDEEP 1572864:V8uHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHs:V8h
MD5 SHA1 SHA512 SSDEEP

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svcupdater.exe

Path C:\Users\Admin\AppData\Roaming\Win32Sync\svcupdater.exe
Size 674.4MB
SHA256 9c1704441b9e2e256e8e90da8738912aefca1994658ee022a345dd0cc2969844
MD5 7a7c6f7848c7333c0c07e8f20eb40243
SHA1 4c461dbba7f135f1735b135bbbeab2ac282b1825
SHA512 b7e3c74ea3f934e8c8f7d48528866faee8376fab1faaa03825eb690ec90b6358ff0d347bcd5634632b5abf5c3fed0406374aa444d9b361dd1975cfde1fe01291
SSDEEP 1572864:V8uHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHk:V8R
MD5 SHA1 SHA512 SSDEEP

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memory/1196-54-0x0000000075D01000-0x0000000075D03000-memory.dmp

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memory/1196-55-0x0000000000C80000-0x000000000168E000-memory.dmp

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memory/1196-57-0x0000000000C80000-0x000000000168E000-memory.dmp

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memory/1196-59-0x0000000000C80000-0x000000000168E000-memory.dmp

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memory/2008-65-0x0000000000E90000-0x000000000189E000-memory.dmp

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memory/2008-64-0x0000000000E90000-0x000000000189E000-memory.dmp

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memory/2008-67-0x0000000000E90000-0x000000000189E000-memory.dmp

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