e607e52cb362cdca751c9cf27c91b8f5087649c720d49fd31ee925176107e501

Resubmissions

13-01-2025 04:02

250113-el1zlavlf1 10

12-01-2025 15:18

250112-sp351szpcr 10

Analysis

max time kernel
102s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12-01-2025 15:18

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General

Target

resemblec2.exe
Size

670KB
MD5

a7816959bd66c9c1de58176164a9a346
SHA1

828184b97df950a1ca6288b7693ee35c5c4193b7
SHA256

e607e52cb362cdca751c9cf27c91b8f5087649c720d49fd31ee925176107e501
SHA512

b510573b0a7679534c331b70b9c338ed62c8b3907474209fa91567f9e5884137cce981e5aa95fad424d1f81f1bc54012437745d9dd05936268e48796581376bd
SSDEEP

12288:DwXfR1kAiLQSeSiDrSBOsHENlXme4ylVUGpR9UR7BDF66zL/wVh/4ixdgWrE8qnD:DwvR1kkSebDedE3X/lvpR9U/Ft/Ch/v4

Score

7^/10

discovery

Malware Config

Signatures

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	resemblec2.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	idk.exe

Executes dropped EXE 2 IoCs

pid	Process
4256	idk.exe
3008	AudioDriver.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	idk.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	idk.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 1 IoCs

Web Service

T1102

flow	ioc
8	6.tcp.eu.ngrok.io

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	idk.exe
File created	C:\Windows\assembly\Desktop.ini	idk.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	idk.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	idk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AudioDriver.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000_Classes\Local Settings	resemblec2.exe
Key created	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000_Classes\Local Settings	OpenWith.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
2380	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3008	AudioDriver.exe
3008	AudioDriver.exe
3008	AudioDriver.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1292	OpenWith.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3008	AudioDriver.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3008	AudioDriver.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
3008	AudioDriver.exe

Suspicious use of SetWindowsHookEx 19 IoCs

pid	Process
1292	OpenWith.exe
1292	OpenWith.exe
1292	OpenWith.exe
1292	OpenWith.exe
1292	OpenWith.exe
1292	OpenWith.exe
1292	OpenWith.exe
1292	OpenWith.exe
1292	OpenWith.exe
1292	OpenWith.exe
1292	OpenWith.exe
1292	OpenWith.exe
1292	OpenWith.exe
1292	OpenWith.exe
1292	OpenWith.exe
1292	OpenWith.exe
1292	OpenWith.exe
1292	OpenWith.exe
1292	OpenWith.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5004 wrote to memory of 4256	5004	resemblec2.exe	86
PID 5004 wrote to memory of 4256	5004	resemblec2.exe	86
PID 5004 wrote to memory of 4256	5004	resemblec2.exe	86
PID 4256 wrote to memory of 3008	4256	idk.exe	87
PID 4256 wrote to memory of 3008	4256	idk.exe	87
PID 4256 wrote to memory of 3008	4256	idk.exe	87
PID 1292 wrote to memory of 2380	1292	OpenWith.exe	89
PID 1292 wrote to memory of 2380	1292	OpenWith.exe	89

C:\Users\Admin\AppData\Local\Temp\resemblec2.exe
"C:\Users\Admin\AppData\Local\Temp\resemblec2.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:5004
- C:\Users\Admin\AppData\Local\Temp\idk.exe
  "C:\Users\Admin\AppData\Local\Temp\idk.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Drops desktop.ini file(s)
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4256
- - C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Speech\AudioDriver.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    PID:3008

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1292
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\resemble.py
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:2380

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\idk.exe

Filesize
845KB

MD5
c0f4b33fab9864dfebccb1f7621ac76a

SHA1
9e65684a22bae25570f019366657a83522434590

SHA256
ce59e3370985a4b7f243de0fb67848bcb223781077dee528e2f4adb8e9d8d656

SHA512
6cd5672e2b3615ebb94fb96de29fe1b2cbfa81c1e18080ad6fbb48b25457481e17d8919823970e5bd1e230e2e8c76d379a515551e35bdc10f305d3349ab3cefe

Download Submit
C:\Users\Admin\AppData\Local\Temp\resemble.py

Filesize
27KB

MD5
23f1fabaef532d89fcb6d5bb14a36ef3

SHA1
679a82ed172d49f298bf07b6fa0de9b6c2ce0046

SHA256
e4410bc67b1ee8af2df456713b85040917b8cf749fb7d660feeb625b25ec9c51

SHA512
96e2baa6ce0220b9ad167b60220c683d5b080a9ba9a2e4d320aae6989f4aa2d241f8078e69bdd2da39a20d9b57ae84240da912d29e5e1db36cc90cf6a0537458

Download Submit
memory/5004-0-0x00007FFBC5133000-0x00007FFBC5135000-memory.dmp

Filesize
8KB

Download
memory/5004-1-0x0000000000A80000-0x0000000000B2E000-memory.dmp

Filesize
696KB

Download
memory/5004-4-0x00007FFBC5130000-0x00007FFBC5BF1000-memory.dmp

Filesize
10.8MB

Download
memory/5004-17-0x00007FFBC5130000-0x00007FFBC5BF1000-memory.dmp

Filesize
10.8MB

Download