f6eafafc42bddafeebf62db6be59e488662adf08e4b4340e8687dc8544e608d2

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 20:44

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General

Target

2024-02-28_8d84427e7cb90fb2bdc8170aca42096b_cryptolocker.exe
Size

37KB
MD5

8d84427e7cb90fb2bdc8170aca42096b
SHA1

e45c8e9d85cf998d3e9c9a7c2afa7b680b8a767e
SHA256

f6eafafc42bddafeebf62db6be59e488662adf08e4b4340e8687dc8544e608d2
SHA512

d1d2fe11b41bd8470a17b6593c8829e74acdfdfcb99cd4493e52334ce383e1af6bcdb075c1c34ad58dbf92adee36767fdfed483c1a25cdf64254f02ab0d97656
SSDEEP

768:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnv00Girg:m5nkFNMOtEvwDpjG8h00GYg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/980-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b00000002320a-13.dat	CryptoLocker_rule2
behavioral2/memory/980-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3988-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3988-53-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/980-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3988-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3988-53-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/980-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000b00000002320a-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/980-16-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3988-18-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3988-53-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress

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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-02-28_8d84427e7cb90fb2bdc8170aca42096b_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
3988	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 980 wrote to memory of 3988	980	2024-02-28_8d84427e7cb90fb2bdc8170aca42096b_cryptolocker.exe	89
PID 980 wrote to memory of 3988	980	2024-02-28_8d84427e7cb90fb2bdc8170aca42096b_cryptolocker.exe	89
PID 980 wrote to memory of 3988	980	2024-02-28_8d84427e7cb90fb2bdc8170aca42096b_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-28_8d84427e7cb90fb2bdc8170aca42096b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_8d84427e7cb90fb2bdc8170aca42096b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:980
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:3988

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
9869eaac49ef94ff3e93b39c59bb5caf

SHA1
c21555c5d9fcb97be043416ee6ba2c6a8020aa0a

SHA256
275ec3b9b39e47d41c3dea22a16e954d3de58f6a02b198472d5a210afc8aa95e

SHA512
4e8e354cb830b0da4ebbb490392eec9918776e11a032421ff887f409a58e3a0e962946674bbf97dc70568b3d70be1138132a9f6110e12f6ee70186f828fa1ecf

Download Submit
memory/980-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/980-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/980-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/980-3-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/980-16-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/3988-18-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/3988-20-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/3988-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3988-53-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download