11ec6cd792a9b9056e244cb9b5c986f88799265cecf7d0aae194cf58fbccfa82

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
29-04-2024 19:41

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General

Target

2024-04-29_586fcc823f3666e62a109f5b3d7046f0_cryptolocker.exe
Size

43KB
MD5

586fcc823f3666e62a109f5b3d7046f0
SHA1

a9122c79728c9fcdbf1c50f3707fda95f7a10d6f
SHA256

11ec6cd792a9b9056e244cb9b5c986f88799265cecf7d0aae194cf58fbccfa82
SHA512

75514f6e2f3bcdbbf3e38a98c0a357cc1aef80fcc25370e6f7d002c4ef6e47a6790cbc2cf14ef17711457dd2642d7a31aaf8729f02ec95c985bceae6d69c37ae
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnvhx5/xFRp5jRL:m5nkFNMOtEvwDpjG8hhXj5h

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1696-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c000000023b54-13.dat	CryptoLocker_rule2
behavioral2/memory/1696-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1356-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1356-27-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1696-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1356-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1356-27-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/1696-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000c000000023b54-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1696-17-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1356-18-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1356-27-0x0000000000500000-0x000000000050E000-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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-04-29_586fcc823f3666e62a109f5b3d7046f0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1356	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 1696 wrote to memory of 1356	1696	2024-04-29_586fcc823f3666e62a109f5b3d7046f0_cryptolocker.exe	84
PID 1696 wrote to memory of 1356	1696	2024-04-29_586fcc823f3666e62a109f5b3d7046f0_cryptolocker.exe	84
PID 1696 wrote to memory of 1356	1696	2024-04-29_586fcc823f3666e62a109f5b3d7046f0_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-29_586fcc823f3666e62a109f5b3d7046f0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_586fcc823f3666e62a109f5b3d7046f0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1696
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1356

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
44KB

MD5
4782e1573b8d618da2e4687cfe3b8574

SHA1
b2c62e9bfdcbe75dbe512d781f1a6c8105807910

SHA256
c98d4f73ac1df7dad18a8f2dfa498fd63411fe7eaa4faee47f06c28e84998baf

SHA512
0ea8bb8158f04f97cabf93f1868226e7b849fb5df27f5bbc7ad8d3d21d2c6cdba33c30b348bef6b7872af50514649083813cbd674afb5ce62804d60b2b87f674

Download Submit
memory/1356-18-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1356-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1356-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1356-27-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1696-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1696-1-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/1696-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/1696-9-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/1696-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download