nanocore | 497bb8042e4c8036a243a97a6268c6202b01e33e6935e26e43cb1583fc34cd8e

Analysis

max time kernel
140s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
02/04/2024, 14:57

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General

Target
KRSEL000005628600.PNG.scr
Size 1.0MB
Sample240402-sbq9asdf87
SHA256 2d2f62269797be7ef763ac2da37e4c190381cfba8798e92e73ee9aa2084386f1
MD5 1f221e6e2a07d553e3fcf5bdb5874b2e
SHA1 0cd7541409f63dda3781d18c61bdcd74782192e6
SHA512 6ba7d89395d226a8d11ade5be491d5d98ab7d64c4d27d8ccab284bbdd007bb9d97cd13c21010d2f54a05c75da7af349c79ddd00f16671016daaa5c4da1b6be63
SSDEEP 24576:rAOcZEh4lkCwJlOZIafXiba6TPY5I7nT1RMwazk:t6SCuKfXb6c5IzTXM7I
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

strongodss.ddns.net:48562
185.19.85.175:48562

Mutex

ba2baad0-dd3f-4844-a1e3-4d042f9ae8b6

Attributes

activate_away_mode
false
backup_connection_host
185.19.85.175
backup_dns_server
buffer_size
65538
build_time
2021-04-20T00:12:13.961451136Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
48562
default_group
HOBBIT
enable_debug_mode
true
gc_threshold
1.0485772e+07
keep_alive_timeout
30000
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.0485772e+07
mutex
ba2baad0-dd3f-4844-a1e3-4d042f9ae8b6
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
strongodss.ddns.net
primary_dns_server
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
set_critical_process
false
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8009

Signatures

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	KRSEL000005628600.PNG.scr

Executes dropped EXE 2 IoCs

pid	Process
1724	bspmflqee.pif
860	RegSvcs.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\AutoUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\98025414\\Update.vbs"	bspmflqee.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.exe"	RegSvcs.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Chrome = "C:\\Users\\Admin\\AppData\\Roaming\\98025414\\BSPMFL~1.PIF C:\\Users\\Admin\\AppData\\Roaming\\98025414\\ewdsxu.ije"	bspmflqee.pif

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1724 set thread context of 860	1724	bspmflqee.pif	92

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\TCP Subsystem\tcpss.exe	RegSvcs.exe
File opened for modification	C:\Program Files (x86)\TCP Subsystem\tcpss.exe	RegSvcs.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
3320	schtasks.exe
3960	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
860	RegSvcs.exe
860	RegSvcs.exe
860	RegSvcs.exe
860	RegSvcs.exe
860	RegSvcs.exe
860	RegSvcs.exe
860	RegSvcs.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
860	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	860	RegSvcs.exe
Token: SeDebugPrivilege	860	RegSvcs.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3952 wrote to memory of 1724	3952	KRSEL000005628600.PNG.scr	88
PID 3952 wrote to memory of 1724	3952	KRSEL000005628600.PNG.scr	88
PID 3952 wrote to memory of 1724	3952	KRSEL000005628600.PNG.scr	88
PID 1724 wrote to memory of 860	1724	bspmflqee.pif	92
PID 1724 wrote to memory of 860	1724	bspmflqee.pif	92
PID 1724 wrote to memory of 860	1724	bspmflqee.pif	92
PID 1724 wrote to memory of 860	1724	bspmflqee.pif	92
PID 1724 wrote to memory of 860	1724	bspmflqee.pif	92
PID 860 wrote to memory of 3320	860	RegSvcs.exe	93
PID 860 wrote to memory of 3320	860	RegSvcs.exe	93
PID 860 wrote to memory of 3320	860	RegSvcs.exe	93
PID 860 wrote to memory of 3960	860	RegSvcs.exe	95
PID 860 wrote to memory of 3960	860	RegSvcs.exe	95
PID 860 wrote to memory of 3960	860	RegSvcs.exe	95

C:\Users\Admin\AppData\Local\Temp\KRSEL000005628600.PNG.scr
"C:\Users\Admin\AppData\Local\Temp\KRSEL000005628600.PNG.scr" /S
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3952
- C:\Users\Admin\AppData\Roaming\98025414\bspmflqee.pif
  "C:\Users\Admin\AppData\Roaming\98025414\bspmflqee.pif" ewdsxu.ije
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1724
- - C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Checks whether UAC is enabled
    - Drops file in Program Files directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:860
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "TCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp468E.tmp"
      4⤵
      Creates scheduled task(s)
      PID:3320
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "TCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp46DD.tmp"
      4⤵
      Creates scheduled task(s)
      PID:3960

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

RegSvcs.exe

Path C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
Size 44KB
SHA256 2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390
MD5 9d352bc46709f0cb5ec974633a0c3c94
SHA1 1969771b2f022f9a86d77ac4d4d239becdf08d07
SHA512 13c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b
SSDEEP 768:4BbSoy+SdIBf0k2dsjYg6Iq8S1GYqWH8BR:noOIBf0ddsjY/ZGyc7
MD5 SHA1 SHA512 SSDEEP

Submit Download

tmp468E.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp468E.tmp
Size 1KB
SHA256 8d9642e1c3cd1e0b5d1763de2fb5e605ba593e5a918b93eec15acbc5dcc48fd4
MD5 95aceabc58acad5d73372b0966ee1b35
SHA1 2293b7ad4793cf574b1a5220e85f329b5601040a
SHA512 00760dfc9d8caf357f0cee5336e5448a4cca18e32cc63e1a69c16e34fe00ea29acd5b2cf278e86c6f9c3e66a1b176d27ed927361848212e6bf1fade7d3d06e74
MD5 SHA1 SHA512

Submit Download

tmp46DD.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp46DD.tmp
Size 1KB
SHA256 062844155306130d6fafc4fe10ac9e5ddd2ed462532b729c50cdc979c0d83207
MD5 4b7ef560289c0f62d0baf6f14f48a57a
SHA1 8331acb90dde588aa3196919f6e847f398fd06d1
SHA512 ecaa27c4b703d95f9f9b37d8c339982970482e7dab968c2010e0aa644bbfa31973111aafb827565af30c423d1d14e4ff997ec149614e713ff7ef3456894d02d8
MD5 SHA1 SHA512

Submit Download

bspmflqee.pif

Path C:\Users\Admin\AppData\Roaming\98025414\bspmflqee.pif
Size 759KB
SHA256 c9a2399cc1ce6f71db9da2f16e6c025bf6cb0f4345b427f21449cf927d627a40
MD5 8e699954f6b5d64683412cc560938507
SHA1 8ca6708b0f158eacce3ac28b23c23ed42c168c29
SHA512 13035106149c8d336189b4a6bdaf25e10ac0b027baea963b3ec66a815a572426b2e9485258447cf1362802a0f03a2aa257b276057590663161d9d55d5b737b02
SSDEEP 12288:aBzZm7d9AZAYJVB7ii/XAvKxRJBnwvogSJ4M4G4akiP5DGDt2:0cneJVBvXAvwRJdwvZ5akiP5DGR2
MD5 SHA1 SHA512 SSDEEP

Submit Download

ewdsxu.ije

Path C:\Users\Admin\AppData\Roaming\98025414\ewdsxu.ije
Size 133.5MB
SHA256 b10b2a020300a668e155caaab629532793c4d0febe401b4b71b05025dffc2c1e
MD5 88a7b78373eedc7c838ab5ade9628b9d
SHA1 122a17b6e6e9fd2eeb875cabbe673a0886ba67be
SHA512 96d3c826353048f3f32ab9646a227e6e9b27ee879ff963587cb8d50c25423eea2e9aa8b824c642e08f7b6886856e7e858d81392d116838e0e675fe8abc941bc6
SSDEEP 98304:6l5lllNlqlglulhlhl+lJlhlTlOl+l4lCl2l1l4lclDlXlql1l/lLl4lhlklJluq:i
MD5 SHA1 SHA512 SSDEEP

Submit Download

owxpr.pdf

Path C:\Users\Admin\AppData\Roaming\98025414\owxpr.pdf
Size 55KB
SHA256 1249b35f3978f85e5496eaeb12fab950bee9820b42dc84a3b99588b6669da073
MD5 04a33f4af4aff3027a40b095dad04a99
SHA1 9387782276caeef4b3d43dd9e9c6d3bdf968077d
SHA512 a4510faf84e4a57c18ebeee1a7bd31bcd27b1169fdbe88263583c81c9f9037d3ce2ff9a3eac6f5b1e881ccce8265438f9ba458bb7cf164cc841d66cc2a44cfbe
SSDEEP 1536:RFG59wLMFGVBQC7X+G6tzHp4r7OHyhufndZmeFavDt6tiA:vG8LMoP7X+Tzur7OShufndZme8Bwr
MD5 SHA1 SHA512 SSDEEP

Submit Download

qustvis.buq

Path C:\Users\Admin\AppData\Roaming\98025414\qustvis.buq
Size 420KB
SHA256 416505c75142609a8d79c3dc94260cb74942e1731fa1e198855ef8baeb166d3a
MD5 c1d0f02492cc355266ee04f0f2c17c24
SHA1 da8c0302f4877a9b10d263a43e970d8ea7edf57d
SHA512 64e808c1581f5d41879b421447003e32d3ca81b2578e29f2177928e1b4e858310b3c0f202c4be426275f5fab5917a592616caf4090725469c47728e57562e859
SSDEEP 6144:LKeixDkTqQVJ5KX9r7vvZjHIA96nuRzMoWTCBmqlT:OeoolW9rDvpIGzbBzlT
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/860-85-0x00000000060C0000-0x000000000615C000-memory.dmp

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memory/860-78-0x0000000001200000-0x0000000001843000-memory.dmp

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memory/860-84-0x0000000006020000-0x00000000060B2000-memory.dmp

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memory/860-82-0x0000000072BB0000-0x0000000073360000-memory.dmp

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memory/860-86-0x0000000006320000-0x0000000006330000-memory.dmp

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memory/860-87-0x0000000005FC0000-0x0000000005FCA000-memory.dmp

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memory/860-81-0x0000000001200000-0x000000000123A000-memory.dmp

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memory/860-83-0x0000000006530000-0x0000000006AD4000-memory.dmp

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memory/860-95-0x0000000006010000-0x000000000601A000-memory.dmp

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memory/860-96-0x00000000062D0000-0x00000000062DC000-memory.dmp

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memory/860-97-0x00000000062F0000-0x000000000630E000-memory.dmp

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memory/860-98-0x0000000006310000-0x000000000631A000-memory.dmp

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memory/860-99-0x0000000072BB0000-0x0000000073360000-memory.dmp

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memory/860-100-0x0000000006320000-0x0000000006330000-memory.dmp

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