quasar | 278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772

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General

Target

278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772
Size

3.1MB
MD5

d31d13edf1b0218c3abd9d2aa56d70ef
SHA1

bbd910ab3e07db504df3ac3e427e2fac66dd4133
SHA256

278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772
SHA512

6b8a41a51a4d6f5c9ce909567a0c85e6429be61113301057d4f54c6f8243d1d237c6afafc75430f98c3fdd7604363888dadfb452e3ff805a408b424c38d30677
SSDEEP

49152:WvbI22SsaNYfdPBldt698dBcjHksN6fBxQRoGdTTHHB72eh2NT:Wvk22SsaNYfdPBldt6+dBcjHB62

Score

10^/10

office04 quasar

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.1.112:4782

Mutex

0355605d-7aa8-4c93-be89-20f64f2705f9

Attributes

encryption_key
123371CC562DEA62C4475E1D6A3DEEAA00328E0D
install_name
Client.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Quasar Client Startup
subdirectory
SubDir

Signatures

Detects Windows executables referencing non-Windows User-Agents 1 IoCs

Processes:

resource yara_rule

sample INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs

Processes:

resource yara_rule

sample INDICATOR_SUSPICIOUS_Binary_References_Browsers
Detects executables containing common artifacts observed in infostealers 1 IoCs

Processes:

resource yara_rule

sample INDICATOR_SUSPICIOUS_GENInfoStealer
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

278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772

resource	yara_rule
sample	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

resource	yara_rule
sample	INDICATOR_SUSPICIOUS_Binary_References_Browsers

resource	yara_rule
sample	INDICATOR_SUSPICIOUS_GENInfoStealer

resource	yara_rule
sample	family_quasar

resource
278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772

Files

278f8ab35d9c561634e5a9ea51dbd1634abb2c5a6fdb58fd8aeb769de7500772
.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

Sharing

General

Malware Config

Extracted

Signatures

Files

f34d5f2d4577ed6d9ceec516c1f5a744

Headers

DLL Characteristics

File Characteristics

Imports

mscoree

Sections

.text Size: 3.1MB - Virtual size: 3.1MB

.rsrc Size: 3KB - Virtual size: 2KB

.reloc Size: 512B - Virtual size: 12B

.text
Size: 3.1MB - Virtual size: 3.1MB

.rsrc
Size: 3KB - Virtual size: 2KB

.reloc
Size: 512B - Virtual size: 12B