quasar | b923f253757397be0e1b86c92a0854d0eef612fcc3c99fd5be8f96e309d8d5fd

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General

Target

b923f253757397be0e1b86c92a0854d0eef612fcc3c99fd5be8f96e309d8d5fd
Size

539KB
MD5

c05d4bfb1c0e89db58fa981980938b76
SHA1

12801b26c7b68224c8540ad08ad9387110d0fd46
SHA256

b923f253757397be0e1b86c92a0854d0eef612fcc3c99fd5be8f96e309d8d5fd
SHA512

926f6d48a44b7b56667e5b74dc3f7cff513f6ae02edd07df0ca2e5bc21690e5cdef77213307d8595a9a4127b582f5fc50aab0b97350e08b7486c33e4ada651c5
SSDEEP

12288:unm5pMGjw5LSk0zWbzGsoYFAY7NvlDmmM:um5GGjw5LSk0zWbzRoYbvlSH

Score

10^/10

controlhost quasar

Malware Config

Extracted

Family

quasar

Version

1.3.0.0

Botnet

Controlhost

121.43.158.106:4782

yc01h.11ychos.xyz:4782

Mutex

QSR_MUTEX_GFWuzMTNQOijYUKopR

Attributes

encryption_key
Xym3BhtshKCyrit7obQT8XbWGz4i7Yw4
install_name
Controlhost.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Controlhost
subdirectory
Controlhost

Signatures

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

Processes:

resource	yara_rule
sample	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

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

resource	yara_rule
sample	family_quasar

Files

b923f253757397be0e1b86c92a0854d0eef612fcc3c99fd5be8f96e309d8d5fd
.exe windows:4 windows x86 arch:x86

f34d5f2d4577ed6d9ceec516c1f5a744

Code Sign

18:6d:cb:df:59:28:c5:b0:43:cf:e4:47:de:c3:84:14
Certificate

Issuer

CN=Microsoft Corporation

Not Before

03-01-2019 14:56

Not After

03-01-2020 15:16

Subject

CN=Microsoft Corporation

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

28:a3:4c:3e:53:55:b9:9d:48:b0:57:e1:ca:7c:9b:69
Certificate

Issuer

CN=Microsoft Corporation

Not Before

03-01-2018 14:54

Not After

03-01-2019 15:14

Subject

CN=Microsoft Corporation

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

03:01:9a:02:3a:ff:58:b1:6b:d6:d5:ea:e6:17:f0:66
Certificate

Issuer

CN=DigiCert Assured ID CA-1,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

22-10-2014 00:00

Not After

22-10-2024 00:00

Subject

CN=DigiCert Timestamp Responder,O=DigiCert,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

06:fd:f9:03:96:03:ad:ea:00:0a:eb:3f:27:bb:ba:1b
Certificate

Issuer

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

10-11-2006 00:00

Not After

10-11-2021 00:00

Subject

CN=DigiCert Assured ID CA-1,OU=www.digicert.com,O=DigiCert Inc,C=US

Extended Key Usages

ExtKeyUsageServerAuth
ExtKeyUsageClientAuth
ExtKeyUsageCodeSigning
ExtKeyUsageEmailProtection
ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

56:b3:9b:da:1a:7c:07:fe:8d:9d:ed:a3:0b:64:4d:a8:bd:6a:e2:bc
Signer

Actual PE Digest

56:b3:9b:da:1a:7c:07:fe:8d:9d:ed:a3:0b:64:4d:a8:bd:6a:e2:bc

Digest Algorithm

sha1

PE Digest Matches

true

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: 531KB - Virtual size: 530KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rsrc
Size: 1KB - Virtual size: 1KB

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

Code Sign

18:6d:cb:df:59:28:c5:b0:43:cf:e4:47:de:c3:84:14Certificate

Extended Key Usages

Key Usages

28:a3:4c:3e:53:55:b9:9d:48:b0:57:e1:ca:7c:9b:69Certificate

Extended Key Usages

Key Usages

03:01:9a:02:3a:ff:58:b1:6b:d6:d5:ea:e6:17:f0:66Certificate

Extended Key Usages

Key Usages

06:fd:f9:03:96:03:ad:ea:00:0a:eb:3f:27:bb:ba:1bCertificate

Extended Key Usages

Key Usages

56:b3:9b:da:1a:7c:07:fe:8d:9d:ed:a3:0b:64:4d:a8:bd:6a:e2:bcSigner

Headers

DLL Characteristics

File Characteristics

Imports

mscoree

Sections

.text Size: 531KB - Virtual size: 530KB

.rsrc Size: 1KB - Virtual size: 1KB

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

18:6d:cb:df:59:28:c5:b0:43:cf:e4:47:de:c3:84:14
Certificate

28:a3:4c:3e:53:55:b9:9d:48:b0:57:e1:ca:7c:9b:69
Certificate

03:01:9a:02:3a:ff:58:b1:6b:d6:d5:ea:e6:17:f0:66
Certificate

06:fd:f9:03:96:03:ad:ea:00:0a:eb:3f:27:bb:ba:1b
Certificate

56:b3:9b:da:1a:7c:07:fe:8d:9d:ed:a3:0b:64:4d:a8:bd:6a:e2:bc
Signer

.text
Size: 531KB - Virtual size: 530KB

.rsrc
Size: 1KB - Virtual size: 1KB

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