a9ce0cb3c8cbb258dcb546960111584b25bb65be1d835d9a5a10a5ba63bdb8bd

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/04/2024, 15:39

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General

Target

2024-04-08_b06d855689815ab8d8e34e298967ed22_cryptolocker.exe
Size

99KB
MD5

b06d855689815ab8d8e34e298967ed22
SHA1

5c1d8316658db37abb10a126e9a94f5fa50b22ab
SHA256

a9ce0cb3c8cbb258dcb546960111584b25bb65be1d835d9a5a10a5ba63bdb8bd
SHA512

75aa3cca5c0c83beef6d0178b6cc4cd35c92c8e950275dfad212558a5be843680a9474828a1d1b016552545aa73eef19295892c63de8dc1917368500a827f9a2
SSDEEP

1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNCWwm:26a+2OtEvwDpjtzJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023339-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023339-12.dat	CryptoLocker_set1

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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-04-08_b06d855689815ab8d8e34e298967ed22_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1724	asih.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 2036 wrote to memory of 1724	2036	2024-04-08_b06d855689815ab8d8e34e298967ed22_cryptolocker.exe	93
PID 2036 wrote to memory of 1724	2036	2024-04-08_b06d855689815ab8d8e34e298967ed22_cryptolocker.exe	93
PID 2036 wrote to memory of 1724	2036	2024-04-08_b06d855689815ab8d8e34e298967ed22_cryptolocker.exe	93

C:\Users\Admin\AppData\Local\Temp\2024-04-08_b06d855689815ab8d8e34e298967ed22_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-08_b06d855689815ab8d8e34e298967ed22_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1724

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=4120 --field-trial-handle=3112,i,1786399861560734457,5606877702857066305,262144 --variations-seed-version /prefetch:8
1⤵
PID:1248

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\asih.exe

Filesize
99KB

MD5
21faf7d4686bdfe11f3f96702e1763d2

SHA1
ec1d73e55b8856f2c8665b96ae40c1c3de3e2ccf

SHA256
390cc3478687165b131c96eb97a44445a9de7ad25792e94d353d8d25ab526e47

SHA512
9f999af3cef34c1ca4547268fcde213d8d4b25e262ff0603d1ca77e248a1fe1d68c551bce3bd7424ca0f49e6c112bbf1aaf31b948e9121982f3160799d531af7

Download Submit
memory/1724-17-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/1724-23-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2036-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2036-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2036-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download