4ukey[.]exe | Triage

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General

Target

4ukey.exe
Size

1.8MB
MD5

b4ef23d885178b7f9d96996568060126
SHA1

9378c9bf4bfd3792bf8220af4f13aa9577c46be6
SHA256

e1943b5ead71fc40fbe5f48988ca8e7b9668795788726ac2f19c7039ddf1f8c4
SHA512

9d0ea90c2c307e06eab24221c25e404d9c4f0a4acec9cb6fce04b3cfb7829ff1e04d39244446ebcbcf9d104d40c3fc026d000f16cd3c9d869f860fb33bc95d7d
SSDEEP

49152:S2DuSfVVglZ66XmuItxlwfm+GJfZtKs5rFxT61hjar40Kzz++BGtZUhVtoNXV+Uc:DDuSfV2+Twu+Ofms38Y40Kzz++BGtZUT

Score

7^/10

upx

Malware Config

Signatures

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
sample	upx

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/out.upx

Files

4ukey.exe
.exe windows x86

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

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

08:ad:40:b2:60:d2:9c:4c:9f:5e:cd:a9:bd:93:ae:d9
Certificate

Issuer

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

29/04/2021, 00:00

Not After

28/04/2036, 23:59

Subject

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

01:70:c5:d8:e6:2a:ba:c7:db:20:91:8f:8c:95:b7:e8
Certificate

Issuer

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

Not Before

07/07/2021, 00:00

Not After

11/07/2024, 23:59

Subject

CN=Tenorshare Co.\, Ltd.,O=Tenorshare Co.\, Ltd.,L=Wan Chai,C=HK

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

08:ad:40:b2:60:d2:9c:4c:9f:5e:cd:a9:bd:93:ae:d9
Certificate

Issuer

CN=DigiCert Trusted Root G4,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

29/04/2021, 00:00

Not After

28/04/2036, 23:59

Subject

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

01:70:c5:d8:e6:2a:ba:c7:db:20:91:8f:8c:95:b7:e8
Certificate

Issuer

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

Not Before

07/07/2021, 00:00

Not After

11/07/2024, 23:59

Subject

CN=Tenorshare Co.\, Ltd.,O=Tenorshare Co.\, Ltd.,L=Wan Chai,C=HK

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

93:e2:6e:2b:47:0e:34:08:d6:95:de:a9:cf:e1:4c:6a:8e:d1:03:c6:35:36:11:e4:db:c5:aa:58:44:88:1e:b9
Signer

Actual PE Digest

93:e2:6e:2b:47:0e:34:08:d6:95:de:a9:cf:e1:4c:6a:8e:d1:03:c6:35:36:11:e4:db:c5:aa:58:44:88:1e:b9

Digest Algorithm

sha256

PE Digest Matches

true

20:69:04:84:2d:a6:8d:c4:5e:6b:a7:a1:a7:bd:ec:1b:74:2c:90:dc
Signer

Actual PE Digest

20:69:04:84:2d:a6:8d:c4:5e:6b:a7:a1:a7:bd:ec:1b:74:2c:90:dc

Digest Algorithm

sha1

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Sections

UPX0
Size: - Virtual size: 1.9MB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 1.7MB - Virtual size: 1.7MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 167KB - Virtual size: 168KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
out.upx
.exe windows x86

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Exports

Exports

CreateExportObj
DestroyExportObj
NSISLog
libssh2_agent_connect
libssh2_agent_disconnect
libssh2_agent_free
libssh2_agent_get_identity
libssh2_agent_init
libssh2_agent_list_identities
libssh2_agent_userauth
libssh2_banner_set
libssh2_base64_decode
libssh2_channel_close
libssh2_channel_direct_tcpip_ex
libssh2_channel_eof
libssh2_channel_flush_ex
libssh2_channel_forward_accept
libssh2_channel_forward_cancel
libssh2_channel_forward_listen_ex
libssh2_channel_free
libssh2_channel_get_exit_signal
libssh2_channel_get_exit_status
libssh2_channel_handle_extended_data
libssh2_channel_handle_extended_data2
libssh2_channel_open_ex
libssh2_channel_process_startup
libssh2_channel_read_ex
libssh2_channel_receive_window_adjust
libssh2_channel_receive_window_adjust2
libssh2_channel_request_pty_ex
libssh2_channel_request_pty_size_ex
libssh2_channel_send_eof
libssh2_channel_set_blocking
libssh2_channel_setenv_ex
libssh2_channel_wait_closed
libssh2_channel_wait_eof
libssh2_channel_window_read_ex
libssh2_channel_window_write_ex
libssh2_channel_write_ex
libssh2_channel_x11_req_ex
libssh2_exit
libssh2_free
libssh2_hostkey_hash
libssh2_init
libssh2_keepalive_config
libssh2_keepalive_send
libssh2_knownhost_add
libssh2_knownhost_addc
libssh2_knownhost_check
libssh2_knownhost_checkp
libssh2_knownhost_del
libssh2_knownhost_free
libssh2_knownhost_get
libssh2_knownhost_init
libssh2_knownhost_readfile
libssh2_knownhost_readline
libssh2_knownhost_writefile
libssh2_knownhost_writeline
libssh2_poll
libssh2_poll_channel_read
libssh2_scp_recv
libssh2_scp_send64
libssh2_scp_send_ex
libssh2_session_abstract
libssh2_session_banner_get
libssh2_session_banner_set
libssh2_session_block_directions
libssh2_session_callback_set
libssh2_session_disconnect_ex
libssh2_session_flag
libssh2_session_free
libssh2_session_get_blocking
libssh2_session_get_timeout
libssh2_session_handshake
libssh2_session_hostkey
libssh2_session_init_ex
libssh2_session_last_errno
libssh2_session_last_error
libssh2_session_method_pref
libssh2_session_methods
libssh2_session_set_blocking
libssh2_session_set_timeout
libssh2_session_startup
libssh2_session_supported_algs
libssh2_sftp_close_handle
libssh2_sftp_fstat_ex
libssh2_sftp_fstatvfs
libssh2_sftp_get_channel
libssh2_sftp_init
libssh2_sftp_last_error
libssh2_sftp_mkdir_ex
libssh2_sftp_open_ex
libssh2_sftp_read
libssh2_sftp_readdir_ex
libssh2_sftp_rename_ex
libssh2_sftp_rmdir_ex
libssh2_sftp_seek
libssh2_sftp_seek64
libssh2_sftp_shutdown
libssh2_sftp_stat_ex
libssh2_sftp_statvfs
libssh2_sftp_symlink_ex
libssh2_sftp_tell
libssh2_sftp_tell64
libssh2_sftp_unlink_ex
libssh2_sftp_write
libssh2_trace
libssh2_trace_sethandler
libssh2_userauth_authenticated
libssh2_userauth_hostbased_fromfile_ex
libssh2_userauth_keyboard_interactive_ex
libssh2_userauth_list
libssh2_userauth_password_ex
libssh2_userauth_publickey
libssh2_userauth_publickey_fromfile_ex

Sections

.text
Size: 1.9MB - Virtual size: 1.9MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 609KB - Virtual size: 608KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 52KB - Virtual size: 71KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.gfids
Size: 3KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.tls
Size: 512B - Virtual size: 9B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 793KB - Virtual size: 792KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 96KB - Virtual size: 96KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

Code Sign

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

08:ad:40:b2:60:d2:9c:4c:9f:5e:cd:a9:bd:93:ae:d9Certificate

Extended Key Usages

Key Usages

01:70:c5:d8:e6:2a:ba:c7:db:20:91:8f:8c:95:b7:e8Certificate

Extended Key Usages

Key Usages

08:ad:40:b2:60:d2:9c:4c:9f:5e:cd:a9:bd:93:ae:d9Certificate

Extended Key Usages

Key Usages

01:70:c5:d8:e6:2a:ba:c7:db:20:91:8f:8c:95:b7:e8Certificate

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

93:e2:6e:2b:47:0e:34:08:d6:95:de:a9:cf:e1:4c:6a:8e:d1:03:c6:35:36:11:e4:db:c5:aa:58:44:88:1e:b9Signer

20:69:04:84:2d:a6:8d:c4:5e:6b:a7:a1:a7:bd:ec:1b:74:2c:90:dcSigner

Headers

DLL Characteristics

File Characteristics

Sections

UPX0 Size: - Virtual size: 1.9MB

UPX1 Size: 1.7MB - Virtual size: 1.7MB

.rsrc Size: 167KB - Virtual size: 168KB

Headers

DLL Characteristics

File Characteristics

Exports

Exports

Sections

.text Size: 1.9MB - Virtual size: 1.9MB

.rdata Size: 609KB - Virtual size: 608KB

.data Size: 52KB - Virtual size: 71KB

.gfids Size: 3KB - Virtual size: 3KB

.tls Size: 512B - Virtual size: 9B

.rsrc Size: 793KB - Virtual size: 792KB

.reloc Size: 96KB - Virtual size: 96KB

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

08:ad:40:b2:60:d2:9c:4c:9f:5e:cd:a9:bd:93:ae:d9
Certificate

01:70:c5:d8:e6:2a:ba:c7:db:20:91:8f:8c:95:b7:e8
Certificate

08:ad:40:b2:60:d2:9c:4c:9f:5e:cd:a9:bd:93:ae:d9
Certificate

01:70:c5:d8:e6:2a:ba:c7:db:20:91:8f:8c:95:b7:e8
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

93:e2:6e:2b:47:0e:34:08:d6:95:de:a9:cf:e1:4c:6a:8e:d1:03:c6:35:36:11:e4:db:c5:aa:58:44:88:1e:b9
Signer

20:69:04:84:2d:a6:8d:c4:5e:6b:a7:a1:a7:bd:ec:1b:74:2c:90:dc
Signer

UPX0
Size: - Virtual size: 1.9MB

UPX1
Size: 1.7MB - Virtual size: 1.7MB

.rsrc
Size: 167KB - Virtual size: 168KB

.text
Size: 1.9MB - Virtual size: 1.9MB

.rdata
Size: 609KB - Virtual size: 608KB

.data
Size: 52KB - Virtual size: 71KB

.gfids
Size: 3KB - Virtual size: 3KB

.tls
Size: 512B - Virtual size: 9B

.rsrc
Size: 793KB - Virtual size: 792KB

.reloc
Size: 96KB - Virtual size: 96KB