quasar | Client-built[.]exe | Triage

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General

Target

Client-built.exe
Size

502KB
MD5

0f94be1eb3486a5cf1c42193a47244d7
SHA1

74a0d4788aa19f01266a5f730d5e1faa553a977e
SHA256

4fad1e10d02704a44bb78aff9a316e2b62999a0279fb2d365d367a767839e359
SHA512

0685f4af8bf7b7a0c80a276f5f63f23433808eb9841757e8174b58f2317f545d71cc032f473e43e0e03ff26c737a663abb8dcf665cc81548796119c5de9a1885
SSDEEP

6144:MTEgdc0YhebGbXOsA6j1RdhInTmmCf9s/5Etqc+yw4HUcEyOb8F94ts6cTR36:MTEgdfY5A6YTmGu4pywTipCHcd6

Score

10^/10

office04 quasar

Malware Config

Extracted

Family

quasar

Version

1.4.0

Botnet

Office04

C2

considered-arrest.at.ply.gg:19159

Mutex

5afd2fa2-2c98-42fc-b632-38982b482ffa

Attributes

encryption_key
3E946EA967E48A1C0D29A6230F90CFD5213732DE
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

Quasar family
quasar

Quasar payload 1 IoCs

resource	yara_rule
sample	family_quasar

Files

Client-built.exe
.exe windows 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: 498KB - Virtual size: 497KB

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