6090f5de8c4152661f0fc8a57c1fb006512641b454830db9672cfc1b3ac6f0f7

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
10/06/2024, 12:52

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General

Target

2024-06-10_e5624f5759a69f2bec0a686a409f1ece_cryptolocker.exe
Size

53KB
MD5

e5624f5759a69f2bec0a686a409f1ece
SHA1

85d4e68f9a1ab2d0cbcd56a45dfdd067ca60f5b7
SHA256

6090f5de8c4152661f0fc8a57c1fb006512641b454830db9672cfc1b3ac6f0f7
SHA512

45ed092a957901421a102b83a0c08d4f4727d3eff15a48ff232c6c81475b2324cc95b761e8f7679e8975fe310980b5ef2c60aeb785ae97c77a94b8661046a4ac
SSDEEP

768:bODOw9UiamWUB2preAr+OfjH/0S16avdrQFiLjJvtOm:bODOw9acifAoc+vx

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3444-0-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000600000002327d-13.dat	CryptoLocker_rule2
behavioral2/memory/3444-18-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2484-17-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2484-27-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3444-0-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/files/0x000600000002327d-13.dat	UPX
behavioral2/memory/3444-18-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/2484-17-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/2484-27-0x0000000008000000-0x000000000800F000-memory.dmp	UPX

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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-06-10_e5624f5759a69f2bec0a686a409f1ece_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2484	lossy.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3444-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x000600000002327d-13.dat	upx
behavioral2/memory/3444-18-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/2484-17-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/2484-27-0x0000000008000000-0x000000000800F000-memory.dmp	upx

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 3444 wrote to memory of 2484	3444	2024-06-10_e5624f5759a69f2bec0a686a409f1ece_cryptolocker.exe	80
PID 3444 wrote to memory of 2484	3444	2024-06-10_e5624f5759a69f2bec0a686a409f1ece_cryptolocker.exe	80
PID 3444 wrote to memory of 2484	3444	2024-06-10_e5624f5759a69f2bec0a686a409f1ece_cryptolocker.exe	80

C:\Users\Admin\AppData\Local\Temp\2024-06-10_e5624f5759a69f2bec0a686a409f1ece_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-10_e5624f5759a69f2bec0a686a409f1ece_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3444
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2484

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\lossy.exe

Filesize
53KB

MD5
2b3190fedba577d80db1be8041b15540

SHA1
aba0074f39621c932827c6c70724cd22c68b79bf

SHA256
8f78d21af945a3460a3f9eac47bcc6d30069710b840d49ce7ad474cd926b3560

SHA512
a67d42c697f696790b70b953567124c3c9fb20bdae5ab30dc25b1c80e4c72cbf97e71767c08d0fb1c79e98ca750bedcd31baf372426957cc6142f2e9d8e5e812

Download Submit
memory/2484-17-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2484-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2484-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2484-27-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3444-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3444-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3444-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3444-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/3444-18-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download