f584c54ae63e4dde92f8da1d098a0ff3f1c1dd263041e8d45fa88dc809bdfa19

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
13/01/2024, 22:38

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General

Target

59980a5a3472e8737e7a72f870061235.exe
Size

112KB
MD5

59980a5a3472e8737e7a72f870061235
SHA1

be0577e79663df03a2e5cf902f283029d0fd1940
SHA256

f584c54ae63e4dde92f8da1d098a0ff3f1c1dd263041e8d45fa88dc809bdfa19
SHA512

081543a783ce8b6081bd2c1747ee92cf20bdb6a802af77656d7a85cae59364fe90b78833284715f8aa659e5384c710b2ebd46e5fe2458a70b25e2e22e2ec68b9
SSDEEP

1536:RCyqWhBVC4LN0IqxxSWtn69X0CJDwXwlFoE4nO:0y7BVVLNbqxxTt69kKUMFoEt

Score

7^/10

persistence

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	59980a5a3472e8737e7a72f870061235.exe

Executes dropped EXE 1 IoCs

pid	Process
3528	KartSvr.exe

Loads dropped DLL 1 IoCs

pid	Process
3528	KartSvr.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\KartSvr = "C:\\Windows\\system32\\KartSvr.exe"	59980a5a3472e8737e7a72f870061235.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\karnel32.dll	59980a5a3472e8737e7a72f870061235.exe
File created	C:\Windows\SysWOW64\KartSvr.exe	59980a5a3472e8737e7a72f870061235.exe

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
448	59980a5a3472e8737e7a72f870061235.exe
448	59980a5a3472e8737e7a72f870061235.exe
3528	KartSvr.exe
3528	KartSvr.exe
3528	KartSvr.exe
3528	KartSvr.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 448 wrote to memory of 3528	448	59980a5a3472e8737e7a72f870061235.exe	90
PID 448 wrote to memory of 3528	448	59980a5a3472e8737e7a72f870061235.exe	90
PID 448 wrote to memory of 3528	448	59980a5a3472e8737e7a72f870061235.exe	90

C:\Users\Admin\AppData\Local\Temp\59980a5a3472e8737e7a72f870061235.exe
"C:\Users\Admin\AppData\Local\Temp\59980a5a3472e8737e7a72f870061235.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:448
- C:\Windows\SysWOW64\KartSvr.exe
  "C:\Windows\system32\KartSvr.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetWindowsHookEx
  PID:3528

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\KartSvr.exe

Filesize
24KB

MD5
4fbfed4d1fdc5a71277f9df2be8385d5

SHA1
314b0dc2da7d78cfb66312725b6380dfa100d295

SHA256
a6eee971554e97fd03d0994e84ce73bed3093d7251acf8748f7f9091f1558007

SHA512
82fb106024cdf58c4a5cc24e51c83c092e20978436c75b5c16171db60d2074b9bbf53a7b594d70f157477badf9a36c64bf1512ce87c3a4052cd933f094d5e0c4

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C:\Windows\SysWOW64\karnel32.dll

Filesize
64KB

MD5
8d9047175ee6b511ce951a07621a54de

SHA1
4a7525c8cb7f89d4228e26504557baf714ee9dc6

SHA256
984bf5c1a531ba1c0f55316383dd0b9b91f0661f350b90c96f60b311110de237

SHA512
dc349e9ef53c927e7840d5aa91255a2e92d440c56bd4075af76eb002ec2dab2c01f5839dc3c9eb99be9e7e5db3ad6e40f6690f7180f764cd9e59bbb01bfc2fc8

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads