cymon[.]exe | Triage

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General

Target

cymon.exe
Size

209KB
MD5

1c8fff2623c7f22a968e8b3a5780ff7d
SHA1

970768296b56ec676b6993b81aee5aa8695fb889
SHA256

616445e11dd55234e9f8f866cd2d21c9907b460295943709e3fc9f4f946c5d02
SHA512

35709e36bffe57a2baa50dc79a61ae1dbb23a9c0d5829fadd0c2e7eaa2e8f7297fe7922828984ddec993d2f0c338b56616288fc1a9d27ef1bcf148398a727da7
SSDEEP

1536:EJfYSWajU7uTNdzPSM5tUMrCLYvFkbf3P36Zgk0Fx3LSeIjXymvLAvp9eBUWuMSw:QfJWJ7EC9Y4ffqglOFB6AUb1gJHMHdy

Score

1^/10

Malware Config

Signatures

Files

cymon.exe
.exe windows x64

4d19dfe76c7c3393943672402322d571

Code Sign

33:00:00:03:de:8d:56:82:5a:f1:a4:a9:67:00:00:00:00:03:de
Certificate

Issuer

CN=Microsoft Code Signing PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

15/12/2020, 21:24

Not After

02/12/2021, 21:24

Subject

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:0c:52:4c:00:00:00:00:00:03
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

06/07/2010, 20:40

Not After

06/07/2025, 20:50

Subject

CN=Microsoft Code Signing PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

15:e2:29:fe:14:35:70:74:b6:6a:98:f8:0b:49:59:7c
Certificate

Issuer

CN=C2RService,O=C2RService,L=Redmond,ST=Washington,C=US

Not Before

17/02/2017, 00:12

Not After

31/12/2039, 23:59

Subject

CN=C2RService,O=C2RService,L=Redmond,ST=Washington,C=US

a6:48:7f:f6:49:84:a4:31:3f:e5:92:c7:31:3e:f3:45:15:88:97:c4
Signer

Actual PE Digest

a6:48:7f:f6:49:84:a4:31:3f:e5:92:c7:31:3e:f3:45:15:88:97:c4

Digest Algorithm

sha1

PE Digest Matches

false

Signature Validations

Trusted

false

Verification

Signing Certificate

CN=C2RService,O=C2RService,L=Redmond,ST=Washington,C=US

13/04/2023, 18:10
Valid: false

4d:46:77:8c:e9:fe:2e:38:f8:79:86:02:23:da:47:09:d8:20:7e:19:4a:d2:d0:ca:2d:b8:09:7a:eb:9b:b6:0b
Signer

Actual PE Digest

4d:46:77:8c:e9:fe:2e:38:f8:79:86:02:23:da:47:09:d8:20:7e:19:4a:d2:d0:ca:2d:b8:09:7a:eb:9b:b6:0b

Digest Algorithm

sha256

PE Digest Matches

false

Signature Validations

Trusted

false

Verification

Signing Certificate

CN=Microsoft Corporation,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

13/04/2023, 18:10
Valid: 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_LARGE_ADDRESS_AWARE

Imports

advapi32

CryptAcquireContextW
CryptCreateHash
CryptDecrypt
CryptDeriveKey
CryptDestroyHash
CryptDestroyKey
CryptHashData
CryptReleaseContext

kernel32

CreateThread
DeleteCriticalSection
EnterCriticalSection
FreeConsole
GetLastError
GetModuleHandleA
GetProcAddress
GetStartupInfoA
InitializeCriticalSection
LeaveCriticalSection
SetUnhandledExceptionFilter
Sleep
TlsGetValue
VirtualProtect
VirtualQuery
WaitForSingleObject

msvcrt

__C_specific_handler
__getmainargs
__initenv
__iob_func
__set_app_type
__setusermatherr
_acmdln
_amsg_exit
_cexit
_commode
_fmode
_initterm
_onexit
abort
calloc
exit
fprintf
free
fwrite
malloc
memcpy
memmove
signal
strlen
strncmp
vfprintf
_strrev

Sections

.text
Size: 7KB - Virtual size: 7KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 192B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 67KB - Virtual size: 67KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.pdata
Size: 1024B - Virtual size: 564B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.xdata
Size: 512B - Virtual size: 424B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.bss
Size: - Virtual size: 416B

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

.reloc
Size: 512B - Virtual size: 128B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/4
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/19
Size: 40KB - Virtual size: 39KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/31
Size: 7KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/45
Size: 8KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/57
Size: 3KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/70
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/81
Size: 12KB - Virtual size: 11KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/92
Size: 2KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

4d19dfe76c7c3393943672402322d571

Code Sign

33:00:00:03:de:8d:56:82:5a:f1:a4:a9:67:00:00:00:00:03:deCertificate

Extended Key Usages

61:0c:52:4c:00:00:00:00:00:03Certificate

Key Usages

15:e2:29:fe:14:35:70:74:b6:6a:98:f8:0b:49:59:7cCertificate

a6:48:7f:f6:49:84:a4:31:3f:e5:92:c7:31:3e:f3:45:15:88:97:c4Signer

Signature Validations

Verification

13/04/2023, 18:10 Valid: false

4d:46:77:8c:e9:fe:2e:38:f8:79:86:02:23:da:47:09:d8:20:7e:19:4a:d2:d0:ca:2d:b8:09:7a:eb:9b:b6:0bSigner

Signature Validations

Verification

13/04/2023, 18:10 Valid: false

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

kernel32

msvcrt

Sections

.text Size: 7KB - Virtual size: 7KB

.data Size: 512B - Virtual size: 192B

.rdata Size: 67KB - Virtual size: 67KB

.pdata Size: 1024B - Virtual size: 564B

.xdata Size: 512B - Virtual size: 424B

.bss Size: - Virtual size: 416B

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

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

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

.reloc Size: 512B - Virtual size: 128B

/4 Size: 1KB - Virtual size: 1KB

/19 Size: 40KB - Virtual size: 39KB

/31 Size: 7KB - Virtual size: 6KB

/45 Size: 8KB - Virtual size: 8KB

/57 Size: 3KB - Virtual size: 2KB

/70 Size: 1KB - Virtual size: 1KB

/81 Size: 12KB - Virtual size: 11KB

/92 Size: 2KB - Virtual size: 1KB

33:00:00:03:de:8d:56:82:5a:f1:a4:a9:67:00:00:00:00:03:de
Certificate

61:0c:52:4c:00:00:00:00:00:03
Certificate

15:e2:29:fe:14:35:70:74:b6:6a:98:f8:0b:49:59:7c
Certificate

a6:48:7f:f6:49:84:a4:31:3f:e5:92:c7:31:3e:f3:45:15:88:97:c4
Signer

13/04/2023, 18:10
Valid: false

4d:46:77:8c:e9:fe:2e:38:f8:79:86:02:23:da:47:09:d8:20:7e:19:4a:d2:d0:ca:2d:b8:09:7a:eb:9b:b6:0b
Signer

13/04/2023, 18:10
Valid: false

.text
Size: 7KB - Virtual size: 7KB

.data
Size: 512B - Virtual size: 192B

.rdata
Size: 67KB - Virtual size: 67KB

.pdata
Size: 1024B - Virtual size: 564B

.xdata
Size: 512B - Virtual size: 424B

.bss
Size: - Virtual size: 416B

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

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

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

.reloc
Size: 512B - Virtual size: 128B

/4
Size: 1KB - Virtual size: 1KB

/19
Size: 40KB - Virtual size: 39KB

/31
Size: 7KB - Virtual size: 6KB

/45
Size: 8KB - Virtual size: 8KB

/57
Size: 3KB - Virtual size: 2KB

/70
Size: 1KB - Virtual size: 1KB

/81
Size: 12KB - Virtual size: 11KB

/92
Size: 2KB - Virtual size: 1KB