cb66989d1c23873da67aba6760a79b469de6c1f4d494ad73e8a6a289c6d02793

Analysis

max time kernel
90s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
05-12-2022 06:08

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General

Target

cb66989d1c23873da67aba6760a79b469de6c1f4d494ad73e8a6a289c6d02793.exe
Size

38KB
MD5

ed156cd1b7e2ebb8ab065b4b0ddc4a8d
SHA1

8369cd990b18f4a8f0c99275fdd632e610b40129
SHA256

cb66989d1c23873da67aba6760a79b469de6c1f4d494ad73e8a6a289c6d02793
SHA512

aa60f24d12c506a8efc95cb13310d97e8b1d4abffeccfe134fe760acd578f0fe1212ae807a8d40075c310d6a330a115cc1d2bf43c0e42cd73893a0e7e3253264
SSDEEP

768:WbegT+4QTpc+TglEB3N0797pe9WoRDonRIgnJy2um:oTipc+TQN9petKPk3

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2436	Rundll.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	cb66989d1c23873da67aba6760a79b469de6c1f4d494ad73e8a6a289c6d02793.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Rundll.exe	cb66989d1c23873da67aba6760a79b469de6c1f4d494ad73e8a6a289c6d02793.exe
File created	C:\Windows\SysWOW64\Rundll.exe	cb66989d1c23873da67aba6760a79b469de6c1f4d494ad73e8a6a289c6d02793.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	cb66989d1c23873da67aba6760a79b469de6c1f4d494ad73e8a6a289c6d02793.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2436	Rundll.exe
2436	Rundll.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5016 wrote to memory of 2436	5016	cb66989d1c23873da67aba6760a79b469de6c1f4d494ad73e8a6a289c6d02793.exe	81
PID 5016 wrote to memory of 2436	5016	cb66989d1c23873da67aba6760a79b469de6c1f4d494ad73e8a6a289c6d02793.exe	81
PID 5016 wrote to memory of 2436	5016	cb66989d1c23873da67aba6760a79b469de6c1f4d494ad73e8a6a289c6d02793.exe	81

C:\Users\Admin\AppData\Local\Temp\cb66989d1c23873da67aba6760a79b469de6c1f4d494ad73e8a6a289c6d02793.exe
"C:\Users\Admin\AppData\Local\Temp\cb66989d1c23873da67aba6760a79b469de6c1f4d494ad73e8a6a289c6d02793.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:5016
- C:\Windows\SysWOW64\Rundll.exe
  "C:\Windows\System32\Rundll.exe" "C:\Users\Admin\AppData\Local\Temp\cb66989d1c23873da67aba6760a79b469de6c1f4d494ad73e8a6a289c6d02793.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  PID:2436

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\Rundll.exe

Filesize
38KB

MD5
ed156cd1b7e2ebb8ab065b4b0ddc4a8d

SHA1
8369cd990b18f4a8f0c99275fdd632e610b40129

SHA256
cb66989d1c23873da67aba6760a79b469de6c1f4d494ad73e8a6a289c6d02793

SHA512
aa60f24d12c506a8efc95cb13310d97e8b1d4abffeccfe134fe760acd578f0fe1212ae807a8d40075c310d6a330a115cc1d2bf43c0e42cd73893a0e7e3253264

Download Submit
C:\Windows\SysWOW64\Rundll.exe

Filesize
38KB

MD5
ed156cd1b7e2ebb8ab065b4b0ddc4a8d

SHA1
8369cd990b18f4a8f0c99275fdd632e610b40129

SHA256
cb66989d1c23873da67aba6760a79b469de6c1f4d494ad73e8a6a289c6d02793

SHA512
aa60f24d12c506a8efc95cb13310d97e8b1d4abffeccfe134fe760acd578f0fe1212ae807a8d40075c310d6a330a115cc1d2bf43c0e42cd73893a0e7e3253264

Download Submit
memory/2436-137-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/5016-132-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/5016-136-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download