920d22e35d0451886c108d99ad7e3315e3b529f9a170e7385959e144de8dad83

Analysis

max time kernel
145s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
25/01/2024, 20:23

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General

Target

2024-01-25_1957734173fc7cac8d553d96cdded729_cryptolocker.exe
Size

60KB
MD5

1957734173fc7cac8d553d96cdded729
SHA1

9790c06b9888fecad9e660a6175989c4f94a4255
SHA256

920d22e35d0451886c108d99ad7e3315e3b529f9a170e7385959e144de8dad83
SHA512

87038eb3e1b3efc25da9fb340d15780e8092193c83ab6364cf5184a167aa7a6a0cdcb0b710f70a5af1e25cc4086d0a2c54dc7524face35545ab70b5851e03f84
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMz:TCjsIOtEvwDpj5HE/OUHnSMM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3136-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023207-13.dat	CryptoLocker_rule2
behavioral2/memory/3136-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2468-54-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3136-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023207-13.dat	CryptoLocker_set1
behavioral2/memory/3136-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2468-54-0x0000000000500000-0x000000000050E000-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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-01-25_1957734173fc7cac8d553d96cdded729_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
2468	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 3136 wrote to memory of 2468	3136	2024-01-25_1957734173fc7cac8d553d96cdded729_cryptolocker.exe	85
PID 3136 wrote to memory of 2468	3136	2024-01-25_1957734173fc7cac8d553d96cdded729_cryptolocker.exe	85
PID 3136 wrote to memory of 2468	3136	2024-01-25_1957734173fc7cac8d553d96cdded729_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-01-25_1957734173fc7cac8d553d96cdded729_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_1957734173fc7cac8d553d96cdded729_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3136
- 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:2468

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
60KB

MD5
f079fffaea7dcc6702940f0d44bf5026

SHA1
9d4aa6f358b3568e99fe31df0ed739b964d9b49c

SHA256
54d4b68c310b4dbbf5d7700c8b7cc86efba19168838d3049dde387a0e7b9794a

SHA512
981941e98659b86e218be7bdb748d8494f1216d78b0222b1f95b144bcfb8ab2f921729ade7fcf5b9a0b34b4a63c25556602ad0eafce2c398e69ec63f84844cc0

Download Submit
memory/2468-19-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/2468-22-0x0000000001F50000-0x0000000001F56000-memory.dmp

Filesize
24KB

Download
memory/2468-54-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/3136-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/3136-1-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/3136-2-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/3136-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3136-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download