Analysis
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max time kernel
117s -
max time network
131s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
11-07-2022 12:25
Static task
static1
Behavioral task
behavioral1
Sample
Lucky Fixed.exe
Resource
win7-20220414-en
General
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Target
Lucky Fixed.exe
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Size
1.5MB
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MD5
02346b31c94a650a16dea1a262db5153
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SHA1
a301b0d05d01a35b6e893d3d2ebe9bf8985ae434
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SHA256
2da5d10cdba79d8a8153eaf7ab3d4aad3afaf14c6d9098f7720858c61910948c
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SHA512
1b6bd5adc407829ffbfadea6e4d37b0b21baaac926fd909ed9fe0c7084a2f432df11a2640dd6423cff9a8beb0b4e11b272c2a02f48f75b64dc25f8b109838c9a
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
Decoder.exepid Process 4484 Decoder.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
Lucky Fixed.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation Lucky Fixed.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Looks up external IP address via web service 5 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 24 freegeoip.app 1 api.ipify.org 2 api.ipify.org 13 ip-api.com 23 freegeoip.app -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
Decoder.exedescription ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0 Decoder.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier Decoder.exe -
Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid Process 2968 timeout.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
Lucky Fixed.exeDecoder.exepid Process 484 Lucky Fixed.exe 484 Lucky Fixed.exe 4484 Decoder.exe 4484 Decoder.exe 4484 Decoder.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Lucky Fixed.exeDecoder.exedescription pid Process Token: SeDebugPrivilege 484 Lucky Fixed.exe Token: SeDebugPrivilege 4484 Decoder.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
Lucky Fixed.execmd.exedescription pid Process procid_target PID 484 wrote to memory of 4484 484 Lucky Fixed.exe 82 PID 484 wrote to memory of 4484 484 Lucky Fixed.exe 82 PID 484 wrote to memory of 4484 484 Lucky Fixed.exe 82 PID 484 wrote to memory of 2480 484 Lucky Fixed.exe 83 PID 484 wrote to memory of 2480 484 Lucky Fixed.exe 83 PID 2480 wrote to memory of 2968 2480 cmd.exe 85 PID 2480 wrote to memory of 2968 2480 cmd.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\Lucky Fixed.exe"C:\Users\Admin\AppData\Local\Temp\Lucky Fixed.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:484 -
C:\ProgramData\Decoder.exe"C:\ProgramData\Decoder.exe"2⤵
- Executes dropped EXE
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4484
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\.cmd""2⤵
- Suspicious use of WriteProcessMemory
PID:2480 -
C:\Windows\system32\timeout.exetimeout 43⤵
- Delays execution with timeout.exe
PID:2968
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
490KB
MD5c29c0d495ed13e703f433d53bdffdab8
SHA174ed36e6b6027b61abcfe2956670ffd9de7fd71a
SHA25620309707aa6fc678963aace7685a37839d439c850b1ba399bdbfbbeddc10ed4b
SHA512fea4c1066ee6df3ebb29a354678a3d0f1398cd216b92b261296fcff580b00e19cefe24d975beebcc41854cceef3df2702d569811358dae4203a924fb52cf5426
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Filesize
490KB
MD5c29c0d495ed13e703f433d53bdffdab8
SHA174ed36e6b6027b61abcfe2956670ffd9de7fd71a
SHA25620309707aa6fc678963aace7685a37839d439c850b1ba399bdbfbbeddc10ed4b
SHA512fea4c1066ee6df3ebb29a354678a3d0f1398cd216b92b261296fcff580b00e19cefe24d975beebcc41854cceef3df2702d569811358dae4203a924fb52cf5426
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Filesize
85B
MD573712247036b6a24d16502c57a3e5679
SHA165ca9edadb0773fc34db7dfefe9e6416f1ac17fa
SHA2568bd49d7e7e6b2c2dc16a4cb0eebb8f28892775fad56c9e4aaa22d59f01883cd0
SHA512548eef10b0118f7d907fa19c12de68b47278afffb3eb9460621efb2b711ebcf6b90d0ea1c077fc480e032bf241fb3f8cc995ec1373e301446f89f1a74a6309de