7b5ecfaaf61dab00d18562f5ff92a840ee8fec396fa53995c0ac7a14f7151f20

Analysis

max time kernel
142s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 03:47

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General

Target

2024-02-04_9458b3a9411dad679107afc90cec42f6_cryptolocker.exe
Size

79KB
MD5

9458b3a9411dad679107afc90cec42f6
SHA1

f87da8df2cd0c60e79a56d190109fad4597f8aa9
SHA256

7b5ecfaaf61dab00d18562f5ff92a840ee8fec396fa53995c0ac7a14f7151f20
SHA512

e8ef870e4981c37f7cf93c615c1391b66824d478d03d1f520772d4a69b203a64868bbea1214d90deb379f877f5a5b1f41d890c5c5715feeb8572cff5529db4d4
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMbF:TCjsIOtEvwDpj5HE/OUHnSM/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3112-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000231f5-13.dat	CryptoLocker_rule2
behavioral2/memory/3112-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1444-46-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3112-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00070000000231f5-13.dat	CryptoLocker_set1
behavioral2/memory/3112-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1444-46-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-02-04_9458b3a9411dad679107afc90cec42f6_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
1444	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 3112 wrote to memory of 1444	3112	2024-02-04_9458b3a9411dad679107afc90cec42f6_cryptolocker.exe	83
PID 3112 wrote to memory of 1444	3112	2024-02-04_9458b3a9411dad679107afc90cec42f6_cryptolocker.exe	83
PID 3112 wrote to memory of 1444	3112	2024-02-04_9458b3a9411dad679107afc90cec42f6_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-04_9458b3a9411dad679107afc90cec42f6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_9458b3a9411dad679107afc90cec42f6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3112
- 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:1444

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
80KB

MD5
d433eda6001fa363a2f33ecbb1b41bac

SHA1
473d698036dc2fc0e674e23394ac08c61668b706

SHA256
5a70428df2031d2b34fd5ace53003f47e2b23e9f0e2a721083cd22bb37b2c867

SHA512
d1befa195b64e03dfc5854a6b3acead3d31bb86c78dd34e0a1d2e565acb66ca1d32ebb6efa410de3796baa591715e1bcbfacf8cddf8235464122ebacd822fa69

Download Submit
memory/1444-19-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1444-22-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1444-46-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/3112-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/3112-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/3112-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/3112-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3112-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download