quasar | Beta2[.]exe | Triage

Sharing

General

Target

Beta2.exe
Size

3.1MB
MD5

deabfd991ccd55517081cc6d10c58e97
SHA1

98fb943a6714593ebb567b966702fcad7fb1448d
SHA256

dfb168d8f6a43b1348d9ed49f0ab38365f31987512212a8afae9a311f47f135f
SHA512

0f92d1291e4c8469ff8c891a2528d211fc78d3c81b5351f2cd9821077d9aeda7429c271c48f0056c0a12cd290f48156b5d72fe4c333e7ff0fec2b639c1931aea
SSDEEP

49152:6vBt62XlaSFNWPjljiFa2RoUYIhnU2jrozd3oGTHHB72eh2NT:6vr62XlaSFNWPjljiFXRoUYIZU2H

Score

10^/10

office04 quasar

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

arthurus36off.ddns.net:5555

Mutex

8bf6ad28-ed30-4fe9-9644-9753c363c3b0

Attributes

encryption_key
6314C8C60AA1035CEB920FD38F0342E398BAF5D0
install_name
Client2.exe
log_directory
Logs
reconnect_delay
3000
startup_key
WinSysol

Signatures

Quasar family
quasar
Quasar payload 1 IoCs

Processes:

resource yara_rule

sample family_quasar
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.

Processes:

resource

Beta2.exe

Files

Beta2.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