General
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Target
Client-built.exe
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Size
3.1MB
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MD5
8647ed646c772ebe15351e640ebe72b6
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SHA1
ac263e08bc25bbc014a583f456c3dac3edd7e587
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SHA256
7a5072dd54d7a2c09f9158e5686db032e0524e251cac95e592a5d3b27a41f49c
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SHA512
4ce889817a3869bbdae3603ccba86d958b883ef309188bac56548f028459df2d2c50175597156065cf94fe0c99dfa63ebcdb68000bc1c95b526b1e0eedb6fec2
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SSDEEP
49152:Gvht62XlaSFNWPjljiFa2RoUYIMCZ1JwLoGdKo3THHB72eh2NT:GvL62XlaSFNWPjljiFXRoUYIMCQB
Malware Config
Extracted
quasar
1.4.1
Office04
10.10.128.9:4782
7a8b118d-eb46-45e9-9f01-2fe160e6067b
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encryption_key
AEF7A53D672D2BDA4424CF552DD853E2C78FE173
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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
WindowsUpdater
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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.exe
Files
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Client-built.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