d226c99e9bc6a828927219aa1be52eaa9e0b2ead749b2cc92cde8eb145725add

Analysis

max time kernel
152s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2022 04:14

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General

Target

d226c99e9bc6a828927219aa1be52eaa9e0b2ead749b2cc92cde8eb145725add.dll
Size

447KB
MD5

66f6540c01e1be01cb78879eff8b219f
SHA1

2cb6c156da4b09ecb4913ef08ca533b3b21b9404
SHA256

d226c99e9bc6a828927219aa1be52eaa9e0b2ead749b2cc92cde8eb145725add
SHA512

9ab83331a81c28aed641b2aefe55942c01f5572f5d05fe9f9beaafaa9a8e3a9a9905a30e284145e77eba506a5446be684f724e56e6406eaf2c76314a2e6bf737
SSDEEP

6144:VL9/cggP/6CEZ9pC7dEmv5woTewAAFbS1XJ0nQKk8i2vRbeRi+mEH+ELLe+5h//K:V5/i8CJEmvDTbSxJmOr7+EXe++ZOg

Score

8^/10

persistence

Malware Config

Signatures

Blocklisted process makes network request 2 IoCs

flow	pid	Process
13	4720	rundll32.exe
16	4720	rundll32.exe

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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	rundll32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\d226c99e9bc6a828927219aa1be52eaa9e0b2ead749b2cc92cde8eb145725add.dll = "rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\d226c99e9bc6a828927219aa1be52eaa9e0b2ead749b2cc92cde8eb145725add.dll\",watch"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\d226c99e9bc6a828927219aa1be52eaa9e0b2ead749b2cc92cde8eb145725add.dll_xserve = "rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\d226c99e9bc6a828927219aa1be52eaa9e0b2ead749b2cc92cde8eb145725add.dll\",xserve"	rundll32.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe
1236	rundll32.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1260 wrote to memory of 3668	1260	rundll32.exe	79
PID 1260 wrote to memory of 3668	1260	rundll32.exe	79
PID 1260 wrote to memory of 3668	1260	rundll32.exe	79
PID 3668 wrote to memory of 1236	3668	rundll32.exe	81
PID 3668 wrote to memory of 1236	3668	rundll32.exe	81
PID 3668 wrote to memory of 1236	3668	rundll32.exe	81
PID 3668 wrote to memory of 4720	3668	rundll32.exe	82
PID 3668 wrote to memory of 4720	3668	rundll32.exe	82
PID 3668 wrote to memory of 4720	3668	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d226c99e9bc6a828927219aa1be52eaa9e0b2ead749b2cc92cde8eb145725add.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1260
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\d226c99e9bc6a828927219aa1be52eaa9e0b2ead749b2cc92cde8eb145725add.dll,#1
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:3668
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\d226c99e9bc6a828927219aa1be52eaa9e0b2ead749b2cc92cde8eb145725add.dll",watch
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    PID:1236
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\System32\rundll32.exe" "C:\Users\Admin\AppData\Local\Temp\d226c99e9bc6a828927219aa1be52eaa9e0b2ead749b2cc92cde8eb145725add.dll",xserve
    3⤵
    - Blocklisted process makes network request
    PID:4720

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1236-139-0x0000000000000000-mapping.dmp

Download
memory/1236-149-0x0000000001000000-0x0000000001100000-memory.dmp

Filesize
1024KB

Download
memory/1236-151-0x0000000001000000-0x0000000001100000-memory.dmp

Filesize
1024KB

Download
memory/3668-132-0x0000000000000000-mapping.dmp

Download
memory/3668-133-0x0000000074D80000-0x0000000074E3E000-memory.dmp

Filesize
760KB

Download
memory/3668-135-0x00000000013A0000-0x00000000014A0000-memory.dmp

Filesize
1024KB

Download
memory/3668-138-0x00000000013A0000-0x00000000014A0000-memory.dmp

Filesize
1024KB

Download
memory/4720-144-0x0000000000000000-mapping.dmp

Download
memory/4720-150-0x0000000001200000-0x0000000001300000-memory.dmp

Filesize
1024KB

Download
memory/4720-152-0x0000000001200000-0x0000000001300000-memory.dmp

Filesize
1024KB

Download