f4379f6b531fff4e8131630f963db31118aae14447c35ae7bf4806ce8057cb75

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
13/03/2024, 02:47

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General

Target

2024-03-13_f3e592d83c1b656113a148e9d819f24a_cryptolocker.exe
Size

100KB
MD5

f3e592d83c1b656113a148e9d819f24a
SHA1

68807381e204017c2368deed465eb86df55c1276
SHA256

f4379f6b531fff4e8131630f963db31118aae14447c35ae7bf4806ce8057cb75
SHA512

f765cc5fbb1c5c0b6bc36d714fdb19f326e64d6eae5757b8aee3effd547f5eb0ca88a9412bfabba930ff0cc2ab200386e7c494c22a496818e74998a994a79e60
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/k2yOmiV:xj+VGMOtEvwDpjubwQEIiVmkxv/usV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2064-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000001db2a-13.dat	CryptoLocker_rule2
behavioral2/memory/2064-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1960-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2064-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000001db2a-13.dat	CryptoLocker_set1
behavioral2/memory/2064-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1960-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/2064-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000800000001db2a-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2064-19-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1960-26-0x0000000000500000-0x0000000000510000-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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-03-13_f3e592d83c1b656113a148e9d819f24a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1960	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 2064 wrote to memory of 1960	2064	2024-03-13_f3e592d83c1b656113a148e9d819f24a_cryptolocker.exe	95
PID 2064 wrote to memory of 1960	2064	2024-03-13_f3e592d83c1b656113a148e9d819f24a_cryptolocker.exe	95
PID 2064 wrote to memory of 1960	2064	2024-03-13_f3e592d83c1b656113a148e9d819f24a_cryptolocker.exe	95

C:\Users\Admin\AppData\Local\Temp\2024-03-13_f3e592d83c1b656113a148e9d819f24a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_f3e592d83c1b656113a148e9d819f24a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2064
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1960

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=4376 --field-trial-handle=2256,i,9172343514068348080,519219714517961765,262144 --variations-seed-version /prefetch:8
1⤵
PID:972

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
100KB

MD5
eabf78bcce1a2d1cdefece3458aa96ba

SHA1
854f335923f92ec03514680bb30100dc70a7e4e3

SHA256
2544f069fc1460837dbe36011219e1b506f632d721814f521d2642db4747fbaf

SHA512
60738c2eec035623cb923f0419d733c70a4fcc45c5360890ca34be900e6341fb0357fffae74fd1aa6861f862a29fa043047756d53ec2b029ebb2b0da7d09d7ff

Download Submit
memory/1960-18-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/1960-20-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/1960-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2064-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2064-1-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/2064-2-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/2064-3-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/2064-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download