Analysis
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max time kernel
150s -
max time network
161s -
platform
windows11-21h2_x64 -
resource
win11-20240221-en -
resource tags
arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system -
submitted
23/03/2024, 12:15
Static task
static1
Behavioral task
behavioral1
Sample
5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.exe
Resource
win11-20240221-en
General
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Target
5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.exe
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Size
2.0MB
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MD5
ded765bc5ba4afdd70cdca87b06e031f
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SHA1
e422aec0d328480a4de087d57eb4c4ff5d4aba5e
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SHA256
5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2
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SHA512
3abeab5b8268a885ed4b86a5dd7dbc83cfa4d4e53473c55fb92f7347e9732f108fdfcec3b8f1d3a1153c96dd44cd25224df343ded65ba54da603bdd5093bbfb8
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SSDEEP
49152:32qrMGcmhsZWMZA9wvRXHURUwDbNVrhs2zFb+Z90se7D:m6V0WMZXXiFbjrhs21w9bc
Malware Config
Extracted
socks5systemz
http://bfkrfdz.com/search/?q=67e28dd83a0ba47b435ca84a7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa1ee8889b5e4fa9281ae978a071ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe10c9e994933d
http://bfkrfdz.com/search/?q=67e28dd83a0ba47b435ca84a7c27d78406abdd88be4b12eab517aa5c96bd86eb978f4e845a8bbc896c58e713bc90c94b36b5281fc235a925ed3e03d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee949b32cb6e9f10
Signatures
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Detect Socks5Systemz Payload 5 IoCs
resource yara_rule behavioral2/memory/3912-67-0x0000000000900000-0x00000000009A2000-memory.dmp family_socks5systemz behavioral2/memory/3912-69-0x0000000000900000-0x00000000009A2000-memory.dmp family_socks5systemz behavioral2/memory/3912-78-0x0000000000900000-0x00000000009A2000-memory.dmp family_socks5systemz behavioral2/memory/3912-91-0x0000000000900000-0x00000000009A2000-memory.dmp family_socks5systemz behavioral2/memory/3912-92-0x0000000000900000-0x00000000009A2000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 3008 5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.tmp 3500 colorpicker.exe 3912 colorpicker.exe -
Loads dropped DLL 1 IoCs
pid Process 3008 5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.tmp -
Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description ioc Destination IP 141.98.234.31 -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 1476 wrote to memory of 3008 1476 5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.exe 81 PID 1476 wrote to memory of 3008 1476 5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.exe 81 PID 1476 wrote to memory of 3008 1476 5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.exe 81 PID 3008 wrote to memory of 3500 3008 5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.tmp 82 PID 3008 wrote to memory of 3500 3008 5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.tmp 82 PID 3008 wrote to memory of 3500 3008 5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.tmp 82 PID 3008 wrote to memory of 3912 3008 5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.tmp 83 PID 3008 wrote to memory of 3912 3008 5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.tmp 83 PID 3008 wrote to memory of 3912 3008 5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.tmp 83
Processes
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C:\Users\Admin\AppData\Local\Temp\5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.exe"C:\Users\Admin\AppData\Local\Temp\5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1476 -
C:\Users\Admin\AppData\Local\Temp\is-S49BH.tmp\5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.tmp"C:\Users\Admin\AppData\Local\Temp\is-S49BH.tmp\5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.tmp" /SL5="$90070,1769802,54272,C:\Users\Admin\AppData\Local\Temp\5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3008 -
C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe"C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -i3⤵
- Executes dropped EXE
PID:3500
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C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe"C:\Users\Admin\AppData\Local\Color Picker\colorpicker.exe" -s3⤵
- Executes dropped EXE
PID:3912
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2.1MB
MD5a689446e3c009a816949c13a4369ef96
SHA19da43499c84cb0e5fb3fdc2d9c5862dbc7c30071
SHA2568c605cb6c45bc30ca483ad375e31dafe212c9543a8f3ce27e4c93d0961758345
SHA512d4fce27bdcf05afec2e572639e87b86226e457f4aebe11886ae44df111087a75eae5a986aca964bef2070c2b4eda146ab1f8b7ad3c0883b54fe226f4dfc9935c
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Filesize
512KB
MD592e066358873470bbb6c02636d32b7d6
SHA18a87323ef38616062fd5edcfbfb1f2c076aea733
SHA2560a43882ede90562d29e083264b4d1541c4bdb370ecaf24a6b460960f204a15f8
SHA512017b4e34248bc3ee642f5a8d72e854f198eaacda3f176265fb86a9a968fb6561cd5e633cea6920cd2c9aa4f728ab996b853082872052b49b57d86bfb089bdb71
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Filesize
576KB
MD5441fb00bb4abe338a6c4330fac7b33a6
SHA17d4db62bed1868cb816097e3c4cf4ab5f7e8e626
SHA256e2d2abb06c550ea3946ffb72d2a540265ad282ff22fbfd10ed85a9e28a568fb2
SHA512185c2f019e14e03220715ae10f20fd7411cdb66318561e2132e0468bf5008c7edb7b806412d599f2494b706f03fc83601febaa3c83dd37db1a316e0e87797c3f
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-S49BH.tmp\5d56c9f85ca9374aee5fb7a4fdec2ba0d41123a39d74836419b40d35c6f29ee2.tmp
Filesize677KB
MD592f7775908bb12183914bb0753782913
SHA18d1091da36832942d48f2fe9a1a216fdd556b9c4
SHA256a43c4e3916a92d299c22e2010383b2a8f85e14882a610de57bb2fef91f7984ed
SHA5127e39cafdc00a46f2353f6eeaa8fee0d7c94f489d1fd4581e125408bae63a2e6cd135f65807c3574c833f970b64106badb7dd0a2a6ee9859b3b60b3d1b6e19c39