nanocore | ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818

Analysis

max time kernel
157s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04/04/2024, 10:28

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General

Target
b5eed3811698ace36ce46d3f4a5796e2_JaffaCakes118.exe
Size 420KB
Sample240404-mhtp4scd5v
SHA256 ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818
MD5 b5eed3811698ace36ce46d3f4a5796e2
SHA1 004f4192b26afd94b49eff499a0b967b2f8fab35
SHA512 7fd336f878e8d68dc5916c7ef87c5628b7bbea63f8c3f0b830df2c9d70956e48ba05f47442b368133b43d2972642c4d90181f786d6f872671fa2fe3cc9e4b8de
SSDEEP 6144:8i+ATS2Jx/65A4tA9M+iz2BnG1G0woaXlAKeklbRVjprl6+oSwnlee:eAxjaoxizWG1GCwlKQbRVj1lule
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

purified.ddns.net:4448
127.0.0.1:4448

Mutex

372d7a09-8663-442e-aacf-afa78b1f6fb0

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2018-05-02T14:06:18.122673636Z
bypass_user_account_control
false
bypass_user_account_control_data
PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
4448
default_group
Default
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
372d7a09-8663-442e-aacf-afa78b1f6fb0
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
purified.ddns.net
primary_dns_server
8.8.8.8
request_elevation
false
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.
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-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	b5eed3811698ace36ce46d3f4a5796e2_JaffaCakes118.exe

Executes dropped EXE 8 IoCs

pid	Process
864	Syskey.exe
2004	Syskey.exe
2084	Syskey.exe
1276	Syskey.exe
1348	Syskey.exe
4268	Syskey.exe
4884	Syskey.exe
4712	Syskey.exe

Adds Run key to start application 2 TTPs 1 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\ARP Manager = "C:\\Program Files (x86)\\ARP Manager\\arpmgr.exe"	Syskey.exe

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	Syskey.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 864 set thread context of 2004	864	Syskey.exe	90
PID 2084 set thread context of 1276	2084	Syskey.exe	100
PID 1348 set thread context of 4268	1348	Syskey.exe	106
PID 4884 set thread context of 4712	4884	Syskey.exe	108

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\ARP Manager\arpmgr.exe	Syskey.exe
File opened for modification	C:\Program Files (x86)\ARP Manager\arpmgr.exe	Syskey.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 3 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
3696	schtasks.exe
3360	schtasks.exe
640	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2004	Syskey.exe
2004	Syskey.exe
2004	Syskey.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2004	Syskey.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2004	Syskey.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 2372 wrote to memory of 3696	2372	b5eed3811698ace36ce46d3f4a5796e2_JaffaCakes118.exe	87
PID 2372 wrote to memory of 3696	2372	b5eed3811698ace36ce46d3f4a5796e2_JaffaCakes118.exe	87
PID 2372 wrote to memory of 3696	2372	b5eed3811698ace36ce46d3f4a5796e2_JaffaCakes118.exe	87
PID 2372 wrote to memory of 864	2372	b5eed3811698ace36ce46d3f4a5796e2_JaffaCakes118.exe	89
PID 2372 wrote to memory of 864	2372	b5eed3811698ace36ce46d3f4a5796e2_JaffaCakes118.exe	89
PID 2372 wrote to memory of 864	2372	b5eed3811698ace36ce46d3f4a5796e2_JaffaCakes118.exe	89
PID 864 wrote to memory of 2004	864	Syskey.exe	90
PID 864 wrote to memory of 2004	864	Syskey.exe	90
PID 864 wrote to memory of 2004	864	Syskey.exe	90
PID 864 wrote to memory of 2004	864	Syskey.exe	90
PID 864 wrote to memory of 2004	864	Syskey.exe	90
PID 864 wrote to memory of 2004	864	Syskey.exe	90
PID 864 wrote to memory of 2004	864	Syskey.exe	90
PID 864 wrote to memory of 2004	864	Syskey.exe	90
PID 2004 wrote to memory of 3360	2004	Syskey.exe	91
PID 2004 wrote to memory of 3360	2004	Syskey.exe	91
PID 2004 wrote to memory of 3360	2004	Syskey.exe	91
PID 2004 wrote to memory of 640	2004	Syskey.exe	95
PID 2004 wrote to memory of 640	2004	Syskey.exe	95
PID 2004 wrote to memory of 640	2004	Syskey.exe	95
PID 2084 wrote to memory of 1276	2084	Syskey.exe	100
PID 2084 wrote to memory of 1276	2084	Syskey.exe	100
PID 2084 wrote to memory of 1276	2084	Syskey.exe	100
PID 2084 wrote to memory of 1276	2084	Syskey.exe	100
PID 2084 wrote to memory of 1276	2084	Syskey.exe	100
PID 2084 wrote to memory of 1276	2084	Syskey.exe	100
PID 2084 wrote to memory of 1276	2084	Syskey.exe	100
PID 2084 wrote to memory of 1276	2084	Syskey.exe	100
PID 1348 wrote to memory of 4268	1348	Syskey.exe	106
PID 1348 wrote to memory of 4268	1348	Syskey.exe	106
PID 1348 wrote to memory of 4268	1348	Syskey.exe	106
PID 1348 wrote to memory of 4268	1348	Syskey.exe	106
PID 1348 wrote to memory of 4268	1348	Syskey.exe	106
PID 1348 wrote to memory of 4268	1348	Syskey.exe	106
PID 1348 wrote to memory of 4268	1348	Syskey.exe	106
PID 1348 wrote to memory of 4268	1348	Syskey.exe	106
PID 4884 wrote to memory of 4712	4884	Syskey.exe	108
PID 4884 wrote to memory of 4712	4884	Syskey.exe	108
PID 4884 wrote to memory of 4712	4884	Syskey.exe	108
PID 4884 wrote to memory of 4712	4884	Syskey.exe	108
PID 4884 wrote to memory of 4712	4884	Syskey.exe	108
PID 4884 wrote to memory of 4712	4884	Syskey.exe	108
PID 4884 wrote to memory of 4712	4884	Syskey.exe	108
PID 4884 wrote to memory of 4712	4884	Syskey.exe	108

C:\Users\Admin\AppData\Local\Temp\b5eed3811698ace36ce46d3f4a5796e2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b5eed3811698ace36ce46d3f4a5796e2_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2372
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /create /f /sc minute /mo 1 /tn "'b5eed3811698ace36ce46d3f4a5796e2_JaffaCakes118'" /tr "'C:\Users\Admin\AppData\Roaming\Syskey.exe'"
  2⤵
  - Creates scheduled task(s)
  PID:3696
- C:\Users\Admin\AppData\Roaming\Syskey.exe
  "C:\Users\Admin\AppData\Roaming\Syskey.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:864
- - C:\Users\Admin\AppData\Roaming\Syskey.exe
    "C:\Users\Admin\AppData\Roaming\Syskey.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:2004
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "ARP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmpAF2C.tmp"
      4⤵
      Creates scheduled task(s)
      PID:3360
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "ARP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB0C3.tmp"
      4⤵
      Creates scheduled task(s)
      PID:640

C:\Users\Admin\AppData\Roaming\Syskey.exe
C:\Users\Admin\AppData\Roaming\Syskey.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2084
- C:\Users\Admin\AppData\Roaming\Syskey.exe
  "C:\Users\Admin\AppData\Roaming\Syskey.exe"
  2⤵
  - Executes dropped EXE
  PID:1276

C:\Users\Admin\AppData\Roaming\Syskey.exe
C:\Users\Admin\AppData\Roaming\Syskey.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1348
- C:\Users\Admin\AppData\Roaming\Syskey.exe
  "C:\Users\Admin\AppData\Roaming\Syskey.exe"
  2⤵
  - Executes dropped EXE
  PID:4268

C:\Users\Admin\AppData\Roaming\Syskey.exe
C:\Users\Admin\AppData\Roaming\Syskey.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4884
- C:\Users\Admin\AppData\Roaming\Syskey.exe
  "C:\Users\Admin\AppData\Roaming\Syskey.exe"
  2⤵
  - Executes dropped EXE
  PID:4712

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

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Downloads

Syskey.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Syskey.exe.log
Size 617B
SHA256 035038588c974bc791a2dfd1eb7ac9c48db6911910618221f60ad9b5420325ed
MD5 5edc2e3aa8d28fcb8f79eca8cdf31f6d
SHA1 ca95b41ba4198727346bcff3bc8fc43ae31a52cd
SHA512 941a1b928f3cc5e348bbb646e41072e14ce526c71b11731556031ac98bfd325b0252b05559983577fc39ee96d2ea45143523ccd3062c694e3539441133c0a6d9
MD5 SHA1 SHA512

Submit Download

tmpAF2C.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpAF2C.tmp
Size 1KB
SHA256 33fd5137828c11e419032022c9a22d8a74a90de28dd19697aa9c0c3060b0541e
MD5 3c23c156cbe7ced9d36c5a406c3cef29
SHA1 9854460889c34869851443e4ad6eee07708e5097
SHA512 1dc4d1421c2b41ee1e4dd45e733343ff46003ce7d006f8789770e150f51d5ee283970062da41703e4a79a5d73e855f6604c09b5babde60f65f9ac274c49d2fc2
MD5 SHA1 SHA512

Submit Download

tmpB0C3.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpB0C3.tmp
Size 1KB
SHA256 2aacf4d9629bbec978f5a9ecfe8009cd18cfb5dbde09507937e0aaa13b1aeaba
MD5 b6fc28b9f341812fc919e0d4c5ac0941
SHA1 d49341ec5a78189830dbf64b2bb553d0fbe06e88
SHA512 166ece1d42a5f438142bc5df5f34b30ee17de5844383bb7517200ee77d77b1b8096e963739cc9188602742984d2e1dc8bc9788d8ae12010e5a05415676e29fdf
MD5 SHA1 SHA512

Submit Download

Syskey.exe

Path C:\Users\Admin\AppData\Roaming\Syskey.exe
Size 420KB
SHA256 ef6b028e3c938caf7636a05cc9d9077629d261c9ad68e9e5ed29300ec719b818
MD5 b5eed3811698ace36ce46d3f4a5796e2
SHA1 004f4192b26afd94b49eff499a0b967b2f8fab35
SHA512 7fd336f878e8d68dc5916c7ef87c5628b7bbea63f8c3f0b830df2c9d70956e48ba05f47442b368133b43d2972642c4d90181f786d6f872671fa2fe3cc9e4b8de
SSDEEP 6144:8i+ATS2Jx/65A4tA9M+iz2BnG1G0woaXlAKeklbRVjprl6+oSwnlee:eAxjaoxizWG1GCwlKQbRVj1lule
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/864-24-0x0000000074780000-0x0000000074F30000-memory.dmp

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memory/864-16-0x0000000074780000-0x0000000074F30000-memory.dmp

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memory/864-18-0x0000000002440000-0x0000000002450000-memory.dmp

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memory/864-19-0x0000000004950000-0x000000000496C000-memory.dmp

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memory/1276-49-0x0000000074780000-0x0000000074F30000-memory.dmp

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memory/1276-48-0x0000000000440000-0x0000000000509000-memory.dmp

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memory/1276-44-0x0000000074780000-0x0000000074F30000-memory.dmp

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memory/1348-52-0x0000000004950000-0x0000000004960000-memory.dmp

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memory/1348-51-0x0000000074780000-0x0000000074F30000-memory.dmp

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memory/1348-55-0x0000000074780000-0x0000000074F30000-memory.dmp

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memory/2004-47-0x00000000051C0000-0x00000000051D0000-memory.dmp

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memory/2004-23-0x0000000074780000-0x0000000074F30000-memory.dmp

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memory/2004-20-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/2004-35-0x00000000051B0000-0x00000000051BA000-memory.dmp

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memory/2004-36-0x0000000005A40000-0x0000000005A5E000-memory.dmp

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memory/2004-37-0x0000000005B80000-0x0000000005B8A000-memory.dmp

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memory/2004-26-0x00000000051C0000-0x00000000051D0000-memory.dmp

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memory/2004-27-0x0000000002370000-0x000000000237A000-memory.dmp

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memory/2004-45-0x0000000074780000-0x0000000074F30000-memory.dmp

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memory/2004-25-0x00000000048D0000-0x0000000004962000-memory.dmp

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memory/2084-40-0x0000000074780000-0x0000000074F30000-memory.dmp

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memory/2084-41-0x0000000005020000-0x0000000005030000-memory.dmp

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memory/2084-46-0x0000000074780000-0x0000000074F30000-memory.dmp

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memory/2372-3-0x0000000004B20000-0x00000000050C4000-memory.dmp

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memory/2372-2-0x0000000004970000-0x0000000004A0C000-memory.dmp

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memory/2372-1-0x0000000000400000-0x0000000000470000-memory.dmp

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memory/2372-0-0x0000000074780000-0x0000000074F30000-memory.dmp

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memory/2372-17-0x0000000074780000-0x0000000074F30000-memory.dmp

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memory/4268-57-0x0000000005140000-0x0000000005150000-memory.dmp

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memory/4268-56-0x0000000074780000-0x0000000074F30000-memory.dmp

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memory/4268-59-0x0000000074780000-0x0000000074F30000-memory.dmp

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memory/4712-64-0x0000000074780000-0x0000000074F30000-memory.dmp

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memory/4712-66-0x0000000005220000-0x0000000005230000-memory.dmp

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memory/4712-68-0x0000000074780000-0x0000000074F30000-memory.dmp

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memory/4884-61-0x0000000074780000-0x0000000074F30000-memory.dmp

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memory/4884-65-0x0000000074780000-0x0000000074F30000-memory.dmp

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