quasar | 5a1c61fc913ba7293c85c7b4ad28e88f1683ec2158897eab5a5212d4059ab959

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General

Target

5a1c61fc913ba7293c85c7b4ad28e88f1683ec2158897eab5a5212d4059ab959
Size

3.1MB
MD5

4f107e95a9c20b41ef4e602ec661d3f1
SHA1

429db6828d2152b818f5db9f0574e867dcaf2f6b
SHA256

5a1c61fc913ba7293c85c7b4ad28e88f1683ec2158897eab5a5212d4059ab959
SHA512

b8bc51d250bd443347a52211b4bb1075c8a7b89d3e190d0efd093b3f74e7d2e2c041eaea62798484ab0a9d7da4a81c62f42172b6dacd190bd5a54de706b75f13
SSDEEP

49152:avkt62XlaSFNWPjljiFa2RoUYI6se2ErsSk/uhaoGdS/THHB72eh2NT:av462XlaSFNWPjljiFXRoUYI6seP8i

Score

10^/10

office04 quasar

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

192.168.0.217:4782

Mutex

3945cd6c-7a48-4953-891b-b572e6546d28

Attributes

encryption_key
0424D13FAB664773413CCE167A339263D182142D
install_name
Sigma.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Javaxxx
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

5a1c61fc913ba7293c85c7b4ad28e88f1683ec2158897eab5a5212d4059ab959

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
5a1c61fc913ba7293c85c7b4ad28e88f1683ec2158897eab5a5212d4059ab959

Files

5a1c61fc913ba7293c85c7b4ad28e88f1683ec2158897eab5a5212d4059ab959
.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