Analysis
- max time kernel
88s - max time network
149s - platform
windows7_x64 - resource
win7 - submitted
06/10/2020, 07:42
General
- Target SWIFT MT103.pdf.scr
- Size 917KB
- Sample201006-dvseec7y42
- SHA256 db591a08743176655e567ddffcbbd79b9e2e31feadc1feb54a0200296a93d53d
Malware Config
Extracted
-
nanocore
-
1.2.2.0
-
194.5.97.18:2322
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127.0.0.1:2322
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e7133680-c201-41a0-8afc-8c61c375a995
-
activate_away_mode
true
-
backup_connection_host
127.0.0.1
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backup_dns_server
8.8.4.4
-
buffer_size
65535
-
build_time
2020-07-03T20:41:53.095663736Z
-
bypass_user_account_control
true
- bypass_user_account_control_data
-
clear_access_control
true
-
clear_zone_identifier
false
-
connect_delay
4000
-
connection_port
2322
-
default_group
TIRED 21/09
-
enable_debug_mode
true
-
gc_threshold
1.048576e+07
-
keep_alive_timeout
30000
-
keyboard_logging
false
-
lan_timeout
2500
-
max_packet_size
1.048576e+07
-
mutex
e7133680-c201-41a0-8afc-8c61c375a995
-
mutex_timeout
5000
-
prevent_system_sleep
false
-
primary_connection_host
194.5.97.18
-
primary_dns_server
8.8.8.8
-
request_elevation
true
-
restart_delay
5000
-
run_delay
0
-
run_on_startup
false
-
set_critical_process
true
-
timeout_interval
5000
-
use_custom_dns_server
false
-
version
1.2.2.0
-
wan_timeout
8000
Signatures
- NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Uses the VBS compiler for execution 1 TTPs
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks whether UAC is enabled 1 TTPs 1 IoCs
- Suspicious use of SetThreadContext 3 IoCs
- Drops file in Program Files directory 2 IoCs
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 8 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 37 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SWIFT MT103.pdf.scr"C:\Users\Admin\AppData\Local\Temp\SWIFT MT103.pdf.scr" /S1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QnUIUqYUujgwr" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE772.tmp"2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Local\Temp\SWIFT MT103.pdf.scr"{path}"2⤵
-
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C:\Users\Admin\AppData\Local\Temp\SWIFT MT103.pdf.scr"{path}"2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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\??\c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe"c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\wf2yda1n.a4q"3⤵
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\??\c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe"c:\windows\microsoft.net\framework\v2.0.50727\vbc.exe" /shtml "C:\Users\Admin\AppData\Local\Temp\y0jxbovi.lhv"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/240-37-0x0000000000400000-0x000000000041B000-memory.dmp
memory/240-39-0x0000000000400000-0x000000000041B000-memory.dmp
memory/808-35-0x0000000000400000-0x0000000000438000-memory.dmp
memory/808-36-0x0000000000400000-0x0000000000438000-memory.dmp
memory/808-33-0x0000000000400000-0x0000000000438000-memory.dmp
memory/1388-41-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1388-43-0x0000000000400000-0x0000000000453000-memory.dmp