82c683a7f6e0b4a99a6d3ab519d539a3b0651953c7a71f5309b9d08e4daa7c3c

Analysis

max time kernel
112s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
18-12-2024 10:28

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General

Target

am209.exe
Size

429KB
MD5

ce27255f0ef33ce6304e54d171e6547c
SHA1

e594c6743d869c852bf7a09e7fe8103b25949b6e
SHA256

82c683a7f6e0b4a99a6d3ab519d539a3b0651953c7a71f5309b9d08e4daa7c3c
SHA512

96cfafbab9138517532621d0b5f3d4a529806cfdf6191c589e6fb6ebf471e9df0777fb74e9abbfe4e8cd8821944ad02b1f09775195e190ee8ca5d3fd151d20d9
SSDEEP

6144:as9C0eaieHm71o2pL2IMJDoMc2ZNu5GQpsnp/yFPMsXnQODVNIg+cTtgJ7AO+Zj5:as9C0eaieHmO292D3//yFPMsXkJ7gmk

Score

8^/10

discovery

Malware Config

Signatures

Blocklisted process makes network request 1 IoCs

flow	pid	Process
20	1480	rundll32.exe

Downloads MZ/PE file

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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	am209.exe
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	defnur.exe

Executes dropped EXE 3 IoCs

pid	Process
2032	defnur.exe
3600	defnur.exe
1584	defnur.exe

Loads dropped DLL 1 IoCs

pid	Process
1480	rundll32.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\defnur.job	am209.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 3 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	am209.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	defnur.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
3652	am209.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3652 wrote to memory of 2032	3652	am209.exe	83
PID 3652 wrote to memory of 2032	3652	am209.exe	83
PID 3652 wrote to memory of 2032	3652	am209.exe	83
PID 2032 wrote to memory of 1480	2032	defnur.exe	98
PID 2032 wrote to memory of 1480	2032	defnur.exe	98
PID 2032 wrote to memory of 1480	2032	defnur.exe	98

C:\Users\Admin\AppData\Local\Temp\am209.exe
"C:\Users\Admin\AppData\Local\Temp\am209.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3652
- C:\Users\Admin\AppData\Local\Temp\fc9e0aaab7\defnur.exe
  "C:\Users\Admin\AppData\Local\Temp\fc9e0aaab7\defnur.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2032
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\c1ec479e5342a2\clip64.dll, Main
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:1480

C:\Users\Admin\AppData\Local\Temp\fc9e0aaab7\defnur.exe
C:\Users\Admin\AppData\Local\Temp\fc9e0aaab7\defnur.exe
1⤵
- Executes dropped EXE
PID:3600

C:\Users\Admin\AppData\Local\Temp\fc9e0aaab7\defnur.exe
C:\Users\Admin\AppData\Local\Temp\fc9e0aaab7\defnur.exe
1⤵
- Executes dropped EXE
PID:1584

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

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\fc9e0aaab7\defnur.exe

Filesize
429KB

MD5
ce27255f0ef33ce6304e54d171e6547c

SHA1
e594c6743d869c852bf7a09e7fe8103b25949b6e

SHA256
82c683a7f6e0b4a99a6d3ab519d539a3b0651953c7a71f5309b9d08e4daa7c3c

SHA512
96cfafbab9138517532621d0b5f3d4a529806cfdf6191c589e6fb6ebf471e9df0777fb74e9abbfe4e8cd8821944ad02b1f09775195e190ee8ca5d3fd151d20d9

Download Submit
C:\Users\Admin\AppData\Roaming\c1ec479e5342a2\clip64.dll

Filesize
124KB

MD5
0d3418372c854ee228b78e16ea7059be

SHA1
c0a29d4e74d39308a50f4fd21d0cca1f98cb02c1

SHA256
885bf0b3b12b77ef3f953fbb48def1b45079faa2a4d574ee16afdbafa1de3ac7

SHA512
e30dced307e04ae664367a998cd1ba36349e99e363f70897b5d90c898de2c69c393182c3afba63a74956b5e6f49f0635468e88ed31dd1e3c86c21e987ddd2c19

Download Submit