f1135564ef67f0548357a4fd65ae0671f601b027796dfa8ab115cd9663ef7d0d

Analysis

max time kernel
148s
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
25-04-2024 13:29

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General

Target

2024-04-25_85a48ddb38529ee0530ca8d5e593e704_cryptolocker.exe
Size

40KB
MD5

85a48ddb38529ee0530ca8d5e593e704
SHA1

d2351f16dfb9abdeea9f643e950944275c977487
SHA256

f1135564ef67f0548357a4fd65ae0671f601b027796dfa8ab115cd9663ef7d0d
SHA512

d8487032ead98c31472523fcd385f63f28605f27557327ce24b0a9f93b0a3a61361e60e06dda6f6c1ad8d101ca70b21d246209e827f74ee09d927682d2088bcc
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYsCH0x:i5nkFGMOtEvwDpjR+viHs7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2620-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023265-13.dat	CryptoLocker_rule2
behavioral2/memory/2620-21-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4832-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/2620-21-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4832-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/2620-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0008000000023265-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2620-21-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4832-26-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

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	2024-04-25_85a48ddb38529ee0530ca8d5e593e704_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4832	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 2620 wrote to memory of 4832	2620	2024-04-25_85a48ddb38529ee0530ca8d5e593e704_cryptolocker.exe	91
PID 2620 wrote to memory of 4832	2620	2024-04-25_85a48ddb38529ee0530ca8d5e593e704_cryptolocker.exe	91
PID 2620 wrote to memory of 4832	2620	2024-04-25_85a48ddb38529ee0530ca8d5e593e704_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-25_85a48ddb38529ee0530ca8d5e593e704_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-25_85a48ddb38529ee0530ca8d5e593e704_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2620
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4832

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=3528 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8
1⤵
PID:4424

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\misid.exe

Filesize
41KB

MD5
7468adda2d85f700bd02bae748cdeca2

SHA1
4111864cca51d40acfcd4557828bd356924e22e6

SHA256
70a08e820050cb48d950afcf7187db1ddbc177d20ee4dc092e1ccadca70e6145

SHA512
bf1c5cacce188a29db7aa256b72af8fc22557cf0a615bb60317dde554e58012d06f1e524fe513a939f9c264674f7642df80041f8e5809f37a44cff6dc8ee1951

Download Submit
memory/2620-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2620-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2620-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2620-3-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/2620-21-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4832-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4832-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4832-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download