Feishu[.]exe | Triage

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General

Target

Feishu.exe
Size

454KB
MD5

758a4c548e49257f4e22dce07681d58e
SHA1

cc86535d6df1a9f51c1471cebd8912fd76e071dc
SHA256

bf78cf9d0e7d3a81b8d1ce394737991e2999fd0fcdc91e2ca946a0442ee92282
SHA512

7a4102ae3c9d781efc31ffb85e2fef8cba2667c8fe930ce0fe62595f1d9850acf78c3468de962515f9a73c0d43eaaddff07fef345d2772ac702d74c65c85eaeb
SSDEEP

12288:Aqwm6PUbkNvVP3rf5/ZN8ImdHSKRMOw+kC+Grn:/w+bmVRmdH5w++6n

Score

1^/10

Malware Config

Signatures

Files

Feishu.exe
.exe windows:4 windows x64

45405e34c37ecd58d0da802d21e684e0

Code Sign

0d:42:4a:e0:be:3a:88:ff:60:40:21:ce:14:00:f0:dd
Certificate

Issuer

CN=DigiCert SHA2 Assured ID Timestamping CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

01/01/2021, 00:00

Not After

06/01/2031, 00:00

Subject

CN=DigiCert Timestamp 2021,O=DigiCert\, Inc.,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

04:09:18:1b:5f:d5:bb:66:75:53:43:b5:6f:95:50:08
Certificate

Issuer

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

Not Before

22/10/2013, 12:00

Not After

22/10/2028, 12:00

Subject

CN=DigiCert SHA2 Assured ID Code Signing CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

0a:a1:25:d6:d6:32:1b:7e:41:e4:05:da:36:97:c2:15
Certificate

Issuer

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

Not Before

07/01/2016, 12:00

Not After

07/01/2031, 12:00

Subject

CN=DigiCert SHA2 Assured ID Timestamping CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

0d:01:a4:f8:e1:42:80:52:8e:2d:dd:b2:72:dc:e8:d2
Certificate

Issuer

CN=DigiCert SHA2 Assured ID Code Signing CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

19/07/2020, 00:00

Not After

05/10/2021, 12:00

Subject

CN=Beijing Funshion Online Technologies Co.\, Ltd.,O=Beijing Funshion Online Technologies Co.\, Ltd.,ST=Beijing,C=CN

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

04:09:18:1b:5f:d5:bb:66:75:53:43:b5:6f:95:50:08
Certificate

Issuer

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

Not Before

22/10/2013, 12:00

Not After

22/10/2028, 12:00

Subject

CN=DigiCert SHA2 Assured ID Code Signing CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

0d:01:a4:f8:e1:42:80:52:8e:2d:dd:b2:72:dc:e8:d2
Certificate

Issuer

CN=DigiCert SHA2 Assured ID Code Signing CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

19/07/2020, 00:00

Not After

05/10/2021, 12:00

Subject

CN=Beijing Funshion Online Technologies Co.\, Ltd.,O=Beijing Funshion Online Technologies Co.\, Ltd.,ST=Beijing,C=CN

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

0d:42:4a:e0:be:3a:88:ff:60:40:21:ce:14:00:f0:dd
Certificate

Issuer

CN=DigiCert SHA2 Assured ID Timestamping CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

01/01/2021, 00:00

Not After

06/01/2031, 00:00

Subject

CN=DigiCert Timestamp 2021,O=DigiCert\, Inc.,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

0a:a1:25:d6:d6:32:1b:7e:41:e4:05:da:36:97:c2:15
Certificate

Issuer

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

Not Before

07/01/2016, 12:00

Not After

07/01/2031, 12:00

Subject

CN=DigiCert SHA2 Assured ID Timestamping CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

f9:76:66:a2:69:f7:fc:66:e7:35:af:4a:fd:df:3d:01:ac:df:fd:91:13:13:a5:fa:35:00:e5:68:a8:78:13:30
Signer

Actual PE Digest

f9:76:66:a2:69:f7:fc:66:e7:35:af:4a:fd:df:3d:01:ac:df:fd:91:13:13:a5:fa:35:00:e5:68:a8:78:13:30

Digest Algorithm

sha256

PE Digest Matches

false

a4:25:c0:01:59:d1:ed:59:2b:cc:ec:41:ca:cd:af:42:3b:98:a3:9e
Signer

Actual PE Digest

a4:25:c0:01:59:d1:ed:59:2b:cc:ec:41:ca:cd:af:42:3b:98:a3:9e

Digest Algorithm

sha1

PE Digest Matches

false

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED

Imports

kernel32

DeleteCriticalSection
EnterCriticalSection
GetLastError
GetModuleHandleA
GetProcAddress
InitializeCriticalSection
IsDBCSLeadByteEx
LeaveCriticalSection
LoadLibraryA
MultiByteToWideChar
SetUnhandledExceptionFilter
Sleep
TlsGetValue
VirtualProtect
VirtualQuery
WaitForSingleObject
WideCharToMultiByte
__C_specific_handler

msvcrt

___lc_codepage_func
___mb_cur_max_func
__getmainargs
__initenv
__iob_func
__set_app_type
__setusermatherr
_amsg_exit
_cexit
_commode
_errno
_fmode
_initterm
_lock
_onexit
_unlock
abort
calloc
exit
fprintf
fputc
free
fwrite
localeconv
malloc
memcpy
memset
signal
strerror
strlen
strncmp
vfprintf
wcslen

Sections

.text
Size: 29KB - Virtual size: 28KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 256B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.bss
Size: - Virtual size: 2KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 2KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.CRT
Size: 512B - Virtual size: 96B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.tls
Size: 512B - Virtual size: 16B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 399KB - Virtual size: 399KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 512B - Virtual size: 132B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

45405e34c37ecd58d0da802d21e684e0

Code Sign

0d:42:4a:e0:be:3a:88:ff:60:40:21:ce:14:00:f0:ddCertificate

Extended Key Usages

Key Usages

04:09:18:1b:5f:d5:bb:66:75:53:43:b5:6f:95:50:08Certificate

Extended Key Usages

Key Usages

0a:a1:25:d6:d6:32:1b:7e:41:e4:05:da:36:97:c2:15Certificate

Extended Key Usages

Key Usages

0d:01:a4:f8:e1:42:80:52:8e:2d:dd:b2:72:dc:e8:d2Certificate

Extended Key Usages

Key Usages

04:09:18:1b:5f:d5:bb:66:75:53:43:b5:6f:95:50:08Certificate

Extended Key Usages

Key Usages

0d:01:a4:f8:e1:42:80:52:8e:2d:dd:b2:72:dc:e8:d2Certificate

Extended Key Usages

Key Usages

0d:42:4a:e0:be:3a:88:ff:60:40:21:ce:14:00:f0:ddCertificate

Extended Key Usages

Key Usages

0a:a1:25:d6:d6:32:1b:7e:41:e4:05:da:36:97:c2:15Certificate

Extended Key Usages

Key Usages

f9:76:66:a2:69:f7:fc:66:e7:35:af:4a:fd:df:3d:01:ac:df:fd:91:13:13:a5:fa:35:00:e5:68:a8:78:13:30Signer

a4:25:c0:01:59:d1:ed:59:2b:cc:ec:41:ca:cd:af:42:3b:98:a3:9eSigner

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

msvcrt

Sections

.text Size: 29KB - Virtual size: 28KB

.data Size: 512B - Virtual size: 256B

.rdata Size: 4KB - Virtual size: 4KB

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

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

.bss Size: - Virtual size: 2KB

.idata Size: 2KB - Virtual size: 1KB

.CRT Size: 512B - Virtual size: 96B

.tls Size: 512B - Virtual size: 16B

.rsrc Size: 399KB - Virtual size: 399KB

.reloc Size: 512B - Virtual size: 132B

0d:42:4a:e0:be:3a:88:ff:60:40:21:ce:14:00:f0:dd
Certificate

04:09:18:1b:5f:d5:bb:66:75:53:43:b5:6f:95:50:08
Certificate

0a:a1:25:d6:d6:32:1b:7e:41:e4:05:da:36:97:c2:15
Certificate

0d:01:a4:f8:e1:42:80:52:8e:2d:dd:b2:72:dc:e8:d2
Certificate

04:09:18:1b:5f:d5:bb:66:75:53:43:b5:6f:95:50:08
Certificate

0d:01:a4:f8:e1:42:80:52:8e:2d:dd:b2:72:dc:e8:d2
Certificate

0d:42:4a:e0:be:3a:88:ff:60:40:21:ce:14:00:f0:dd
Certificate

0a:a1:25:d6:d6:32:1b:7e:41:e4:05:da:36:97:c2:15
Certificate

f9:76:66:a2:69:f7:fc:66:e7:35:af:4a:fd:df:3d:01:ac:df:fd:91:13:13:a5:fa:35:00:e5:68:a8:78:13:30
Signer

a4:25:c0:01:59:d1:ed:59:2b:cc:ec:41:ca:cd:af:42:3b:98:a3:9e
Signer

.text
Size: 29KB - Virtual size: 28KB

.data
Size: 512B - Virtual size: 256B

.rdata
Size: 4KB - Virtual size: 4KB

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

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

.bss
Size: - Virtual size: 2KB

.idata
Size: 2KB - Virtual size: 1KB

.CRT
Size: 512B - Virtual size: 96B

.tls
Size: 512B - Virtual size: 16B

.rsrc
Size: 399KB - Virtual size: 399KB

.reloc
Size: 512B - Virtual size: 132B