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Analysis
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max time kernel
145s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
19/02/2024, 18:32 UTC
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-19_b822f3057def84b9dd03792bfaf60a7e_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-19_b822f3057def84b9dd03792bfaf60a7e_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-19_b822f3057def84b9dd03792bfaf60a7e_cryptolocker.exe
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Size
29KB
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MD5
b822f3057def84b9dd03792bfaf60a7e
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SHA1
cd5f78c64d230f20970224ae87130127e96451e1
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SHA256
32ca5329a2021e1117b7c1be86622273c560baebcc4395441c30cfdcc3295c6a
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SHA512
8dfcf2710bb122b30405808eca7b71f2a006e61f69fbce280a68f7c6601e66cbaa0efa0560e037faa5c339b0e25a641fe7075f67cabef2d35ca34e321badad59
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SSDEEP
768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIO/xC:q0zizzOSxMOtEvwDpj/arI
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2072-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0007000000023214-13.dat CryptoLocker_rule2 behavioral2/memory/2072-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4408-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 2 IoCs
resource yara_rule behavioral2/memory/2072-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/4408-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral2/memory/2072-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/files/0x0007000000023214-13.dat UPX behavioral2/memory/2072-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral2/memory/4408-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation 2024-02-19_b822f3057def84b9dd03792bfaf60a7e_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4408 asih.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 2072 wrote to memory of 4408 2072 2024-02-19_b822f3057def84b9dd03792bfaf60a7e_cryptolocker.exe 84 PID 2072 wrote to memory of 4408 2072 2024-02-19_b822f3057def84b9dd03792bfaf60a7e_cryptolocker.exe 84 PID 2072 wrote to memory of 4408 2072 2024-02-19_b822f3057def84b9dd03792bfaf60a7e_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-19_b822f3057def84b9dd03792bfaf60a7e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-19_b822f3057def84b9dd03792bfaf60a7e_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2072 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4408
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Network
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Remote address:8.8.8.8:53Request209.205.72.20.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request209.205.72.20.in-addr.arpaIN PTR
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Remote address:8.8.8.8:53Request29.179.17.96.in-addr.arpaIN PTRResponse29.179.17.96.in-addr.arpaIN PTRa96-17-179-29deploystaticakamaitechnologiescom
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Remote address:8.8.8.8:53Requestemrlogistics.comIN AResponseemrlogistics.comIN CNAMEtraff-4.hugedomains.comtraff-4.hugedomains.comIN CNAMEhdr-nlb8-39c51fa8696874ee.elb.us-east-1.amazonaws.comhdr-nlb8-39c51fa8696874ee.elb.us-east-1.amazonaws.comIN A3.94.41.167hdr-nlb8-39c51fa8696874ee.elb.us-east-1.amazonaws.comIN A52.86.6.113
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Remote address:8.8.8.8:53Request19.53.126.40.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:8.8.8.8:53Request97.17.167.52.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request86.23.85.13.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request15.164.165.52.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request147.160.77.104.in-addr.arpaIN PTRResponse147.160.77.104.in-addr.arpaIN PTRa104-77-160-147deploystaticakamaitechnologiescom
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Remote address:8.8.8.8:53Request150.1.37.23.in-addr.arpaIN PTRResponse150.1.37.23.in-addr.arpaIN PTRa23-37-1-150deploystaticakamaitechnologiescom
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Remote address:8.8.8.8:53Request151.178.17.96.in-addr.arpaIN PTRResponse151.178.17.96.in-addr.arpaIN PTRa96-17-178-151deploystaticakamaitechnologiescom
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Remote address:8.8.8.8:53Request22.236.111.52.in-addr.arpaIN PTRResponse
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Remote address:8.8.8.8:53Request148.160.77.104.in-addr.arpaIN PTRResponse148.160.77.104.in-addr.arpaIN PTRa104-77-160-148deploystaticakamaitechnologiescom
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Remote address:8.8.8.8:53Request10.173.189.20.in-addr.arpaIN PTRResponse
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260 B 5
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260 B 5
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260 B 5
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260 B 5
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260 B 5
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260 B 5
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260 B 5
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144 B 158 B 2 1
DNS Request
209.205.72.20.in-addr.arpa
DNS Request
209.205.72.20.in-addr.arpa
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71 B 135 B 1 1
DNS Request
29.179.17.96.in-addr.arpa
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62 B 192 B 1 1
DNS Request
emrlogistics.com
DNS Response
3.94.41.16752.86.6.113
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71 B 157 B 1 1
DNS Request
19.53.126.40.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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71 B 145 B 1 1
DNS Request
97.17.167.52.in-addr.arpa
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70 B 144 B 1 1
DNS Request
86.23.85.13.in-addr.arpa
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72 B 146 B 1 1
DNS Request
15.164.165.52.in-addr.arpa
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73 B 139 B 1 1
DNS Request
147.160.77.104.in-addr.arpa
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70 B 133 B 1 1
DNS Request
150.1.37.23.in-addr.arpa
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72 B 137 B 1 1
DNS Request
151.178.17.96.in-addr.arpa
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72 B 158 B 1 1
DNS Request
22.236.111.52.in-addr.arpa
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73 B 139 B 1 1
DNS Request
148.160.77.104.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
30KB
MD5402b10f8bc3fec06bf039756506a7e97
SHA1883e9bc89c0eb2375e1ee36c19d0f0248ce4b5e0
SHA2569e262283c15feb03dce1b2d45cce203638ea49191f3ba040611d832a371c336e
SHA512a727b872075327e6fc25715991b606556104f0ceabfb81c31d3ba3c372e64aa040068c097814626d52e73fc0c6a2063769e6513af5dbd8aa8b06557ed743374c