Analysis
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max time kernel
128s -
max time network
137s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220113 -
submitted
19/01/2022, 16:14
Static task
static1
Behavioral task
behavioral1
Sample
Attachments.lnk
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
Attachments.lnk
Resource
win10v2004-en-20220113
Behavioral task
behavioral3
Sample
DumpStack.log.dll
Resource
win7-en-20211208
Behavioral task
behavioral4
Sample
DumpStack.log.dll
Resource
win10v2004-en-20220113
General
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Target
Attachments.lnk
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Size
1KB
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MD5
e87e52db1aa360baf8444c5524dd2b26
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SHA1
b89d0c4568c74f03ec3e1917c22a83c37409b10a
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SHA256
6497223d35530f2e510382aa1866b83ffaf215213b8080b7ecb299b6e7e3e6b1
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SHA512
e93d7808c29ec45569382ee5bd2f50a41c0cf1c1d2cbb909d5aec2abf166f0ad87b672eaa4a1c00b28eb31faf55f1a254d8ab842bcb4d22dd750b26926e7c64a
Malware Config
Signatures
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Bazar Loader
Detected loader normally used to deploy BazarBackdoor malware.
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Bazar/Team9 Loader payload 1 IoCs
resource yara_rule behavioral2/memory/1860-472-0x0000000180000000-0x000000018003D000-memory.dmp BazarLoaderVar5 -
Blocklisted process makes network request 4 IoCs
flow pid Process 31 1860 rundll32.exe 32 1860 rundll32.exe 33 1860 rundll32.exe 34 1860 rundll32.exe -
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-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation cmd.exe -
Loads dropped DLL 1 IoCs
pid Process 1860 rundll32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2236 wrote to memory of 1908 2236 cmd.exe 53 PID 2236 wrote to memory of 1908 2236 cmd.exe 53 PID 1908 wrote to memory of 376 1908 cmd.exe 54 PID 1908 wrote to memory of 376 1908 cmd.exe 54 PID 1908 wrote to memory of 1860 1908 cmd.exe 55 PID 1908 wrote to memory of 1860 1908 cmd.exe 55
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\Attachments.lnk1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2236 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c xcopy /y DumpStack.log c:\programdata\ && C:\Windows\System32\rundll32.exe C:\programdata\DumpStack.log,spload && exit2⤵
- Suspicious use of WriteProcessMemory
PID:1908 -
C:\Windows\system32\xcopy.exexcopy /y DumpStack.log c:\programdata\3⤵PID:376
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\programdata\DumpStack.log,spload3⤵
- Blocklisted process makes network request
- Loads dropped DLL
PID:1860
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