quasar | Proton[.]exe | Triage

Sharing

General

Target

Proton.exe
Size

831KB
MD5

34e8bec2eff81b0451a68e3fc7562fb8
SHA1

91b8aa5907020bad02fcaed731f53e9e433e0f4d
SHA256

dd31e310c502f14a8ca479ee8723dcb8ded8ce9caf6fbeaa435fc966bd1458a4
SHA512

0a6d23997a9d29f40907097c28afa62162cc03369b8a8c4c84e124d131706a8dc19b62c0cc9efb2b6deccbcd72d4e034d9b893d538e5060d0cf7b43556bf4b05
SSDEEP

24576:uZsS44StKHIPbcNK0KKfaOwI55l2SLaB4/:uZsSIKEgKKHwCBe

Score

10^/10

office04 quasar

Malware Config

Extracted

Family

quasar

Version

1.5.0

Botnet

Office04

C2

fall-alberta.gl.at.ply.gg:48316

Mutex

f3374a4e-4175-4db9-a8d8-303de2184767

Attributes

encryption_key
669A421372DEF816BCFAA19491270BD72DCE71F1
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Proton VPN
subdirectory
SubDir

Signatures

Quasar family
quasar

Quasar payload 1 IoCs

resource	yara_rule
sample	family_quasar

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
Proton.exe

Files

Proton.exe
.exe windows:4 windows x86 arch:x86

f34d5f2d4577ed6d9ceec516c1f5a744

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
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_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE

Imports

mscoree

_CorExeMain

Sections

.text
Size: 827KB - Virtual size: 826KB

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