Behavioral task
behavioral1
Sample
Client-built(1).exe
Resource
win7-20241010-en
General
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Target
Client-built(1).exe
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Size
3.1MB
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MD5
ef3e3811d92c8c39a9dbfa1b3d0dcece
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SHA1
8238396252ae7c164c0bca49163040f236fd5148
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SHA256
31ea3fc3712ff925dc56d07e2cae38724e16acd8c1ac719cb5704b4f40da7e55
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SHA512
f9941d6b7680bac92de5c5af99ccbd4fca77e207330ec918a5a6c4b73a17ae228f4a53a21f33e5491e591ccd970fa0a0a82abacb926c235650c7702555a20a46
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SSDEEP
49152:PvjI22SsaNYfdPBldt698dBcjHZGSxNESEjk/iGLoGd6CTHHB72eh2NT:Pvc22SsaNYfdPBldt6+dBcjH9x6I
Malware Config
Extracted
quasar
1.4.1
Office04
146.0.191.34:4782
89ec14d4-c260-40fa-a167-34d2cb269530
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encryption_key
55CC02601E58E75BE97D8FB498B201E77070B65F
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install_name
Client.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
Quasar Client Startup
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subdirectory
SubDir
Signatures
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Quasar family
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Quasar payload 1 IoCs
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource Client-built(1).exe
Files
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Client-built(1).exe.exe windows:4 windows x86 arch:x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 3.1MB - Virtual size: 3.1MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 3KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ