nanocore | 43b1ea9d28fbd3c57dd563eb2097aa6555489795d3f060f2d03192b057878a39

General

Target

Bank Details.exe
Size

322KB
MD5

c9cb9ebf65d06e09204098326b3b697e
SHA1

724b274388945b7bfeac08e09493cce224209237
SHA256

43b1ea9d28fbd3c57dd563eb2097aa6555489795d3f060f2d03192b057878a39
SHA512

2b590c15d093199f0aaf5ce0456e804394468c8305ff723aeb409047053194a64bdb40c5a97b1d8188c4e75d5eeb04ce0abe4165d2c08abc2bf1e9a1afb2cd0b
SSDEEP

6144:/Ya6srTy4CMQbMEGo+as5arFDvnr4APl9tD3KpnbyabsLDLNkbT/KFODte:/YS7ChbMMDx7nr4AHtD+CXQ/KFie

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

arkseven7003.ddns.net:6636

Mutex

52c72f6a-ec93-4545-8ed3-b57fce452a7e

Attributes

activate_away_mode
true
backup_connection_host
arkseven7003.ddns.net
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2023-02-13T09:32:05.283205836Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
false
clear_zone_identifier
true
connect_delay
4000
connection_port
6636
default_group
WORLDPEOPLE
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
52c72f6a-ec93-4545-8ed3-b57fce452a7e
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
arkseven7003.ddns.net
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.
keylogger trojan stealer spyware nanocore

Loads dropped DLL 1 IoCs

pid	Process
3520	Bank Details.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\rbkgplueajs = "C:\\Users\\Admin\\AppData\\Roaming\\avfo\\ktdyhdmv.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\Bank Details.exe\""	Bank Details.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SAAS Monitor = "C:\\Program Files (x86)\\SAAS Monitor\\saasmon.exe"	Bank Details.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	Bank Details.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3520 set thread context of 3984	3520	Bank Details.exe	85

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\SAAS Monitor\saasmon.exe	Bank Details.exe
File created	C:\Program Files (x86)\SAAS Monitor\saasmon.exe	Bank Details.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3984	Bank Details.exe
3984	Bank Details.exe
3984	Bank Details.exe
3984	Bank Details.exe
3984	Bank Details.exe
3984	Bank Details.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3984	Bank Details.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3520	Bank Details.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3984	Bank Details.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3520 wrote to memory of 3984	3520	Bank Details.exe	85
PID 3520 wrote to memory of 3984	3520	Bank Details.exe	85
PID 3520 wrote to memory of 3984	3520	Bank Details.exe	85
PID 3520 wrote to memory of 3984	3520	Bank Details.exe	85

C:\Users\Admin\AppData\Local\Temp\Bank Details.exe
"C:\Users\Admin\AppData\Local\Temp\Bank Details.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3520
- C:\Users\Admin\AppData\Local\Temp\Bank Details.exe
  "C:\Users\Admin\AppData\Local\Temp\Bank Details.exe"
  2⤵
  - 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
  PID:3984

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nshC0A7.tmp\uqjxazkp.dll

Filesize
13KB

MD5
705cfba4775c3d890b490f62a9942ea2

SHA1
cdf538d1e0e93d9a94d3936dfe20ccbd50aa63dc

SHA256
915ac1ffe2ffd66cf6d67e0d330f1356482cff954f3e2303936e74a089bdb0c5

SHA512
2de27493a167c7c9cc3c215b4692e05213cf852bed6c248a333f66cb72ab51f7cf90f8ecd2490731e2a632df1cbaa03d22d21d2313cc29606ae40f14b8271b27

Download Submit
memory/3984-141-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/3984-140-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/3984-142-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/3984-143-0x0000000000400000-0x000000000044A000-memory.dmp

Filesize
296KB

Download
memory/3984-144-0x0000000002450000-0x0000000002460000-memory.dmp

Filesize
64KB

Download
memory/3984-145-0x0000000002450000-0x0000000002460000-memory.dmp

Filesize
64KB

Download
memory/3984-148-0x0000000002450000-0x0000000002460000-memory.dmp

Filesize
64KB

Download
memory/3984-149-0x0000000002450000-0x0000000002460000-memory.dmp

Filesize
64KB

Download
memory/3984-151-0x0000000002450000-0x0000000002460000-memory.dmp

Filesize
64KB

Download
memory/3984-152-0x0000000002450000-0x0000000002460000-memory.dmp

Filesize
64KB

Download
memory/3984-153-0x0000000002450000-0x0000000002460000-memory.dmp

Filesize
64KB

Download
memory/3984-154-0x0000000002450000-0x0000000002460000-memory.dmp

Filesize
64KB

Download
memory/3984-155-0x0000000002450000-0x0000000002460000-memory.dmp

Filesize
64KB

Download

Analysis

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