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Analysis
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max time kernel
117s -
max time network
27s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
15/01/2025, 22:50
Static task
static1
Behavioral task
behavioral1
Sample
61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe
Resource
win7-20240903-en
General
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Target
61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe
-
Size
256KB
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MD5
d2f0b2b434dbfaeb899f4a42d5981940
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SHA1
d88c43669e78b78960be072b741fd1b2f99d5276
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SHA256
61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71
-
SHA512
65966c95acf86043f5609fab77a1886851c0f5e5fe9e55fcb66efbb0955feb7d245e384a42694b2b4ffb99a6abf86eb2787bc0ecdb86cfcc4cc3d830313c731f
-
SSDEEP
6144:85p178U0MURaGyNXYWQzHazRfXrwSRnWwhrQ4B:EeGUA5YZazpXUmZhPB
Malware Config
Extracted
nanocore
1.2.2.0
sysupdate24.ddns.net:45400
ae82ab7f-db07-49ee-9d2b-76075d76f37f
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activate_away_mode
true
- backup_connection_host
- backup_dns_server
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buffer_size
65535
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build_time
2020-04-24T17:41:53.492468936Z
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bypass_user_account_control
true
- bypass_user_account_control_data
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clear_access_control
true
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clear_zone_identifier
false
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connect_delay
4000
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connection_port
45400
-
default_group
Default
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enable_debug_mode
true
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gc_threshold
1.048576e+07
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keep_alive_timeout
30000
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keyboard_logging
false
-
lan_timeout
2500
-
max_packet_size
1.048576e+07
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mutex
ae82ab7f-db07-49ee-9d2b-76075d76f37f
-
mutex_timeout
5000
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prevent_system_sleep
false
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primary_connection_host
sysupdate24.ddns.net
- primary_dns_server
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request_elevation
true
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restart_delay
5000
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run_delay
0
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run_on_startup
true
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set_critical_process
true
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timeout_interval
5000
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use_custom_dns_server
false
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version
1.2.2.0
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wan_timeout
8000
Signatures
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Nanocore family
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Executes dropped EXE 2 IoCs
pid Process 2696 a1punf5t2of.exe 2488 a1punf5t2of.exe -
Loads dropped DLL 2 IoCs
pid Process 1808 61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe 2696 a1punf5t2of.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\b1b2dqljdx3 = "C:\\Users\\Admin\\AppData\\Roaming\\b1b2dqljdx3\\a1punf5t2of.exe" 61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA a1punf5t2of.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2696 set thread context of 2488 2696 a1punf5t2of.exe 31 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a1punf5t2of.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a1punf5t2of.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 2488 a1punf5t2of.exe 2488 a1punf5t2of.exe 2488 a1punf5t2of.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2488 a1punf5t2of.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2488 a1punf5t2of.exe -
Suspicious use of WriteProcessMemory 19 IoCs
description pid Process procid_target PID 1808 wrote to memory of 2696 1808 61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe 28 PID 1808 wrote to memory of 2696 1808 61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe 28 PID 1808 wrote to memory of 2696 1808 61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe 28 PID 1808 wrote to memory of 2696 1808 61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe 28 PID 1808 wrote to memory of 2696 1808 61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe 28 PID 1808 wrote to memory of 2696 1808 61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe 28 PID 1808 wrote to memory of 2696 1808 61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe 28 PID 2696 wrote to memory of 2488 2696 a1punf5t2of.exe 31 PID 2696 wrote to memory of 2488 2696 a1punf5t2of.exe 31 PID 2696 wrote to memory of 2488 2696 a1punf5t2of.exe 31 PID 2696 wrote to memory of 2488 2696 a1punf5t2of.exe 31 PID 2696 wrote to memory of 2488 2696 a1punf5t2of.exe 31 PID 2696 wrote to memory of 2488 2696 a1punf5t2of.exe 31 PID 2696 wrote to memory of 2488 2696 a1punf5t2of.exe 31 PID 2696 wrote to memory of 2488 2696 a1punf5t2of.exe 31 PID 2696 wrote to memory of 2488 2696 a1punf5t2of.exe 31 PID 2696 wrote to memory of 2488 2696 a1punf5t2of.exe 31 PID 2696 wrote to memory of 2488 2696 a1punf5t2of.exe 31 PID 2696 wrote to memory of 2488 2696 a1punf5t2of.exe 31
Processes
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C:\Users\Admin\AppData\Local\Temp\61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe"C:\Users\Admin\AppData\Local\Temp\61cd8ee4a859879cf38c70b7dd67331e429c05266ba71eafca098cfb51561f71N.exe"1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1808 -
C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2696 -
C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"C:\Users\Admin\AppData\Roaming\b1b2dqljdx3\a1punf5t2of.exe"3⤵
- Executes dropped EXE
- Checks whether UAC is enabled
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:2488
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
256KB
MD5b717655e4f54edf7381ddb9f422edc00
SHA15ef78df1e7a501b881b70fa3b9a6989d48a2df4a
SHA2565630baff522ea6b3618fef578ba841998c9e759ec4403826e0f308b42a1c0c3c
SHA5123766644edd2fa55ed2abe21b19cb5e68a8619c5ddb95b5eeaf2cc70423a978005f73b510a1ab0aa87ec7a43ede76fe3e70850c28a1943e5467b6801316ffc59d