66bb32eca9e216e1ff164abba139c5e0d564e51a70eb39aacdb198a1c30ebbda

Analysis

max time kernel
94s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
31-05-2024 17:31

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General

Target

2024-05-31_f5072daf54f9aa201013df95e23195e0_cryptolocker.exe
Size

37KB
MD5

f5072daf54f9aa201013df95e23195e0
SHA1

426762b85b1e81a4aadec6355e473bc147bf4851
SHA256

66bb32eca9e216e1ff164abba139c5e0d564e51a70eb39aacdb198a1c30ebbda
SHA512

628b545aabe2eb93e5c6216aef13f8d55a735831fe4c0ed868eb122de01236d897f595f2d9983b36c4fc82d99590e0c7b85f5a6d29b4e2648fb5b0be64af2f19
SSDEEP

768:bAvJCYOOvbRPDEgXrNekd7l94i3pQheDI/0:bAvJCF+RQgJeab4sbF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023288-12.dat	CryptoLocker_rule2

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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-31_f5072daf54f9aa201013df95e23195e0_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	demka.exe

Executes dropped EXE 1 IoCs

pid	Process
4444	demka.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1104 wrote to memory of 4444	1104	2024-05-31_f5072daf54f9aa201013df95e23195e0_cryptolocker.exe	81
PID 1104 wrote to memory of 4444	1104	2024-05-31_f5072daf54f9aa201013df95e23195e0_cryptolocker.exe	81
PID 1104 wrote to memory of 4444	1104	2024-05-31_f5072daf54f9aa201013df95e23195e0_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-31_f5072daf54f9aa201013df95e23195e0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_f5072daf54f9aa201013df95e23195e0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1104
- C:\Users\Admin\AppData\Local\Temp\demka.exe
  "C:\Users\Admin\AppData\Local\Temp\demka.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4444

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
38KB

MD5
5a270f5930b2aad262478b50611040ea

SHA1
dd84e08917358dda763863c388ffba432c51fc56

SHA256
7507059148b4a2e52e23382eaf142289ebd7a51a28fba1e7d38b0a913229dfc7

SHA512
e4f1736370ea9e2e5a3a955d1f8f01fd744ea8ccd412f674728d0f0b9efaef907b45c3c8f9d6ef6ea5bd297476aab4236bc6d5d63dd0002dc2a2cc02e757308b

Download Submit
C:\Users\Admin\AppData\Local\Temp\medkem.exe

Filesize
186B

MD5
15cf4d3bd5bd06f1078dac9fdc88c284

SHA1
29ee999b13525bdc3cb203da0bd81891bd9d00c7

SHA256
3a43fec884eae160d166a91320d6e3c777c00b355975639c14ff7ca56ab1e073

SHA512
09ddeca6abb18e87340cea4381895afebb47f0aedc49809be7c158901359e74c618bfe3a8b9f744279923023304931b1fbe219430b0ad7f6617510cc8e823046

Download Submit
memory/1104-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1104-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1104-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4444-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download