4ukey[.]exe | Triage

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General

Target

4ukey.exe
Size

1.9MB
MD5

af006b5c93aeda0862e334689cb4e16d
SHA1

7055344c1f554013bdbc9e11f97b5f4ced454a47
SHA256

c9baf5b3bbd9f3dbdecac7ab702b602f29cf12fb62398c507ec026b278fd6eca
SHA512

224eb632fa61efb88d2bd848c5cfa572480698e36d3c92d49c223e14b1aa04b70bd190708f76fa6ed94e8c80200e1dbc0ef741044dad2269378e907d6437706e
SSDEEP

49152:D1OOKgkBsWP5UXpv4k6rKRng378eKK9t00HjK29/NjuzZ7DW5Tm40Kzz++BGtZUA:D1ZNKe54k6a878eKK9bj19/N8ZHa640J

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:5 windows x86 arch:x86

Code Sign

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5a
Certificate

Issuer

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

Not Before

01/08/2022, 00:00

Not After

09/11/2031, 23:59

Subject

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

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5b
Certificate

Issuer

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

Not Before

23/03/2022, 00:00

Not After

22/03/2037, 23:59

Subject

CN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,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

05:44:af:f3:94:9d:08:39:a6:bf:db:3f:5f:e5:61:16
Certificate

Issuer

CN=DigiCert Trusted G4 RSA4096 SHA256 TimeStamping CA,O=DigiCert\, Inc.,C=US

Not Before

14/07/2023, 00:00

Not After

13/10/2034, 23:59

Subject

CN=DigiCert Timestamp 2023,O=DigiCert\, Inc.,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

04:58:65:49:c2:44:d5:21:ff:12:78:e8:9b:a2:3b:d3
Certificate

Issuer

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

Not Before

13/09/2023, 00:00

Not After

11/09/2026, 23:59

Subject

SERIALNUMBER=3086133,CN=Tenorshare (Hongkong) Limited,O=Tenorshare (Hongkong) Limited,L=Sheung Wan,C=HK,2.5.4.15=#131450726976617465206f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.3=#1302484b

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

3f:ef:0b:4d:e5:c5:9c:c3:8f:d2:4d:3c:11:00:60:7b:a9:42:6b:0e:ff:fb:27:e8:01:d2:a9:0e:9e:00:2f:31
Signer

Actual PE Digest

3f:ef:0b:4d:e5:c5:9c:c3:8f:d2:4d:3c:11:00:60:7b:a9:42:6b:0e:ff:fb:27:e8:01:d2:a9:0e:9e:00:2f:31

Digest Algorithm

sha256

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: 2.0MB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

UPX1
Size: 1.8MB - Virtual size: 1.8MB

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:5 windows x86 arch: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: 2.1MB - Virtual size: 2.1MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 660KB - Virtual size: 659KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 53KB - Virtual size: 72KB

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: 833KB - Virtual size: 833KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 102KB - Virtual size: 102KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

Code Sign

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5aCertificate

Key Usages

07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5bCertificate

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

05:44:af:f3:94:9d:08:39:a6:bf:db:3f:5f:e5:61:16Certificate

Extended Key Usages

Key Usages

04:58:65:49:c2:44:d5:21:ff:12:78:e8:9b:a2:3b:d3Certificate

Extended Key Usages

Key Usages

3f:ef:0b:4d:e5:c5:9c:c3:8f:d2:4d:3c:11:00:60:7b:a9:42:6b:0e:ff:fb:27:e8:01:d2:a9:0e:9e:00:2f:31Signer

Headers

DLL Characteristics

File Characteristics

Sections

UPX0 Size: - Virtual size: 2.0MB

UPX1 Size: 1.8MB - Virtual size: 1.8MB

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

Headers

DLL Characteristics

File Characteristics

Exports

Exports

Sections

.text Size: 2.1MB - Virtual size: 2.1MB

.rdata Size: 660KB - Virtual size: 659KB

.data Size: 53KB - Virtual size: 72KB

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

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

.rsrc Size: 833KB - Virtual size: 833KB

.reloc Size: 102KB - Virtual size: 102KB

0e:9b:18:8e:f9:d0:2d:e7:ef:db:50:e2:08:40:18:5a
Certificate

07:36:37:b7:24:54:7c:d8:47:ac:fd:28:66:2a:5e:5b
Certificate

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

05:44:af:f3:94:9d:08:39:a6:bf:db:3f:5f:e5:61:16
Certificate

04:58:65:49:c2:44:d5:21:ff:12:78:e8:9b:a2:3b:d3
Certificate

3f:ef:0b:4d:e5:c5:9c:c3:8f:d2:4d:3c:11:00:60:7b:a9:42:6b:0e:ff:fb:27:e8:01:d2:a9:0e:9e:00:2f:31
Signer

UPX0
Size: - Virtual size: 2.0MB

UPX1
Size: 1.8MB - Virtual size: 1.8MB

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

.text
Size: 2.1MB - Virtual size: 2.1MB

.rdata
Size: 660KB - Virtual size: 659KB

.data
Size: 53KB - Virtual size: 72KB

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

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

.rsrc
Size: 833KB - Virtual size: 833KB

.reloc
Size: 102KB - Virtual size: 102KB