cc36de26034bc86a81559792bde7ac79e50109d95ed25aecf33fe52a5d8b9b74

Analysis

max time kernel
127s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
23/04/2024, 04:51

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General

Target

2024-04-23_afe1e1ed3c84be3a89a5c4d3d6156135_cryptolocker.exe
Size

32KB
MD5

afe1e1ed3c84be3a89a5c4d3d6156135
SHA1

8e616e2698d5f82f98c3dbb7b0e592d2d2d74dae
SHA256

cc36de26034bc86a81559792bde7ac79e50109d95ed25aecf33fe52a5d8b9b74
SHA512

b50be443177d18da8d9dfa7b46c75bd820ea3ab8d47c33390ef6102e7cbf4935ab918c3b15c6eebab0b28653a5a11efe6a2eddf7a05c9100c088335adb04ba7d
SSDEEP

768:bFPm5zusFUB2preAr+Ofjg0S16avdrQFiLjJvt+:bFPmpiif/oc+v+

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2112-0-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002325a-13.dat	CryptoLocker_rule2
behavioral2/memory/2112-21-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3608-26-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/2112-0-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/files/0x000800000002325a-13.dat	UPX
behavioral2/memory/2112-21-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/memory/3608-26-0x0000000008000000-0x000000000800E000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-04-23_afe1e1ed3c84be3a89a5c4d3d6156135_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3608	lossy.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2112-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/files/0x000800000002325a-13.dat	upx
behavioral2/memory/2112-21-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/3608-26-0x0000000008000000-0x000000000800E000-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 2112 wrote to memory of 3608	2112	2024-04-23_afe1e1ed3c84be3a89a5c4d3d6156135_cryptolocker.exe	91
PID 2112 wrote to memory of 3608	2112	2024-04-23_afe1e1ed3c84be3a89a5c4d3d6156135_cryptolocker.exe	91
PID 2112 wrote to memory of 3608	2112	2024-04-23_afe1e1ed3c84be3a89a5c4d3d6156135_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-23_afe1e1ed3c84be3a89a5c4d3d6156135_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-23_afe1e1ed3c84be3a89a5c4d3d6156135_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3608

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1408 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8
1⤵
PID:4016

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\lossy.exe

Filesize
32KB

MD5
8b7fc537d2076f27db6daf2e6a5ed377

SHA1
f2e6637867a992aad7796a40fdafc646f690f4ff

SHA256
f2848d84a5d997bc369df269e1eaea2e7a79121ebc9c69a5847df0eb2249ac71

SHA512
d0822593307c5811480a8dd1d9994c81e0df4c725a52af4552c4b0e96a9eda35997f6b342afa887948be858a4f6343d8583965d6d00d1db57e731bb6849e4f9a

Download Submit
memory/2112-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/2112-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2112-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2112-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2112-21-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/3608-18-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3608-22-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/3608-26-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download