073a61981e62c4b573e74bdea9cbe0b43eb6697f295e6822cb91275b363c6149

Analysis

max time kernel
142s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-02-2024 20:37

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General

Target

2024-02-28_56b9b4e11b8e0ad8a082595d2c7fb098_cryptolocker.exe
Size

126KB
MD5

56b9b4e11b8e0ad8a082595d2c7fb098
SHA1

d9f25ab7d2cc44dd3cc6a2f3e9b621963d032dd6
SHA256

073a61981e62c4b573e74bdea9cbe0b43eb6697f295e6822cb91275b363c6149
SHA512

11ed07745c18cfefe650c7c96e8df9eda0bc7f38fdb19bc9e19030d02cf64e0a3b62391505a14e53d60d6b0d038a5ab291b89ab8f9c0cdbe8e3a1c227b07bf9c
SSDEEP

1536:gUj+AIMOtEvwDpjNbwQEIPlemUhYwkkxGBpR/2:vCA9OtEvwDpjo

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023017-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023017-12.dat	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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-02-28_56b9b4e11b8e0ad8a082595d2c7fb098_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
836	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 3448 wrote to memory of 836	3448	2024-02-28_56b9b4e11b8e0ad8a082595d2c7fb098_cryptolocker.exe	97
PID 3448 wrote to memory of 836	3448	2024-02-28_56b9b4e11b8e0ad8a082595d2c7fb098_cryptolocker.exe	97
PID 3448 wrote to memory of 836	3448	2024-02-28_56b9b4e11b8e0ad8a082595d2c7fb098_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-02-28_56b9b4e11b8e0ad8a082595d2c7fb098_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_56b9b4e11b8e0ad8a082595d2c7fb098_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3448
- 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:836

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=3704 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
1⤵
PID:1376

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
126KB

MD5
8b652eff91eac686310487904ef1c9a8

SHA1
21d2fafa5aa42e97e697f281ef1f38bb95c88b34

SHA256
6d0af8ce42b6ee8f91ad77b3cdebffe32e894c84f3651c4ae53d3c5cd5517914

SHA512
6aa5f9a524cc0ee98b5d574ea88af8e4dc65c0ec07c5795930035bc7108169530bfbcbc5feeb2cfd2fd5421021307f30e9fc8512356cc7e1fd393e8879735f54

Download Submit
memory/836-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/836-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3448-0-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3448-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3448-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download