75d5dc5a8cc4c66849ff04472410dbba46ec2d214f46f6534fea09080a73a2f7

Analysis

max time kernel
145s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/03/2024, 05:29

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General

Target

2024-03-10_0d3f2a1063f19b837cba305eb018f850_cryptolocker.exe
Size

37KB
MD5

0d3f2a1063f19b837cba305eb018f850
SHA1

520559f0be8ee7db5824e028b61d115d4516e713
SHA256

75d5dc5a8cc4c66849ff04472410dbba46ec2d214f46f6534fea09080a73a2f7
SHA512

890cb1b835a4238b697ce51cbfe444b39a28601dd2174259cb4564352fbfe0a4d1926676a2e47786ab3497010cd562b3198fcd3cf153eb5d4345c4a544f3407c
SSDEEP

384:+cX+ni9VCr5nQI021q4VQBqURYpetOOtEvwDpjqIGRxzOP51FqQLicn3f3VhBlX1:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnv/1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1136-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002324b-13.dat	CryptoLocker_rule2
behavioral2/memory/1136-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4904-19-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4904-28-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1136-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4904-19-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4904-28-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/1136-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000700000002324b-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1136-16-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4904-19-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4904-28-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress

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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-10_0d3f2a1063f19b837cba305eb018f850_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4904	misid.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 1136 wrote to memory of 4904	1136	2024-03-10_0d3f2a1063f19b837cba305eb018f850_cryptolocker.exe	100
PID 1136 wrote to memory of 4904	1136	2024-03-10_0d3f2a1063f19b837cba305eb018f850_cryptolocker.exe	100
PID 1136 wrote to memory of 4904	1136	2024-03-10_0d3f2a1063f19b837cba305eb018f850_cryptolocker.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-03-10_0d3f2a1063f19b837cba305eb018f850_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_0d3f2a1063f19b837cba305eb018f850_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1136
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4904

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1340 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:8
1⤵
PID:876

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\misid.exe

Filesize
37KB

MD5
384c84a10a8ea3b8d2446d2fa93d72ab

SHA1
97f731924bd345459ab431a970d475fdb0295be8

SHA256
d871f143b184a7bb3a4e50b78aad808afbe5f2eb955791f78c3330209d7aa3df

SHA512
d6fda8f30663541480831653b37a50fa395954b22477b0aa550860510a4da1ded6c628239e2a5af28892b2240febdb2d705979f39e10adaad931fe8e456b157c

Download Submit
memory/1136-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1136-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/1136-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/1136-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/1136-16-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4904-19-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4904-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4904-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4904-28-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download