nanocore | d3b89309f9088554afe3ce791ddb2eb93a4dd1945fcffae7221500514b730791

Resubmissions

12/11/2022, 16:21

221112-ttxdpsgf5910

05/11/2022, 14:36

221105-ryphjsadhq10

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
05/11/2022, 14:36

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General

Target
file.exe
Size 948KB
Sample221105-ryphjsadhq
SHA256 d3b89309f9088554afe3ce791ddb2eb93a4dd1945fcffae7221500514b730791
MD5 f2176483dc8567816a381cebc5a42885
SHA1 4e36da9dc9aa91ce3e416e5515619a3f66b22a24
SHA512 00a151e32a794ac9c8a7e9dc4cbf0475a1e21fa11ed5619736c83c91d4ae652da18d5854ffa68f4e82a9ee246ea9331d7cfb5e61a4ceb93b44f111f2b270bbea
SSDEEP 12288:AIg27toeMPVRSTQKvdZ1Zpi8CUWELn+Nt69h+2a8Elg9MZTSnoVz1Lvu:maHMtYTrvdPZpvCELaEHaVSsLG
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

maxlogs.webhop.me:1620

Mutex

9d764268-05c2-4a8e-8c39-b4db356d4640

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-05-29T07:34:04.203922136Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
1620
default_group
x
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
9d764268-05c2-4a8e-8c39-b4db356d4640
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
maxlogs.webhop.me
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\SCSI Service = "C:\\Program Files (x86)\\SCSI Service\\scsisvc.exe"	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1048 set thread context of 660	1048	file.exe	31

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SCSI Service\scsisvc.exe	MSBuild.exe
File opened for modification	C:\Program Files (x86)\SCSI Service\scsisvc.exe	MSBuild.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
836	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1048	file.exe
1048	file.exe
1296	powershell.exe
660	MSBuild.exe
660	MSBuild.exe
660	MSBuild.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
660	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1048	file.exe
Token: SeDebugPrivilege	1296	powershell.exe
Token: SeDebugPrivilege	660	MSBuild.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1048 wrote to memory of 1296	1048	file.exe	27
PID 1048 wrote to memory of 1296	1048	file.exe	27
PID 1048 wrote to memory of 1296	1048	file.exe	27
PID 1048 wrote to memory of 1296	1048	file.exe	27
PID 1048 wrote to memory of 836	1048	file.exe	29
PID 1048 wrote to memory of 836	1048	file.exe	29
PID 1048 wrote to memory of 836	1048	file.exe	29
PID 1048 wrote to memory of 836	1048	file.exe	29
PID 1048 wrote to memory of 660	1048	file.exe	31
PID 1048 wrote to memory of 660	1048	file.exe	31
PID 1048 wrote to memory of 660	1048	file.exe	31
PID 1048 wrote to memory of 660	1048	file.exe	31
PID 1048 wrote to memory of 660	1048	file.exe	31
PID 1048 wrote to memory of 660	1048	file.exe	31
PID 1048 wrote to memory of 660	1048	file.exe	31
PID 1048 wrote to memory of 660	1048	file.exe	31
PID 1048 wrote to memory of 660	1048	file.exe	31

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1048
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\NFUoaLwrvjn.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1296
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NFUoaLwrvjn" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB5E8.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:836
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
  2⤵
  - Adds Run key to start application
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:660

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmpB5E8.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpB5E8.tmp
Size 1KB
SHA256 bfce77e710ca06ac9b2a92224c577073d2e6bbe9b14735445463fc65c86b085a
MD5 a7a644fabf1c55ec799180a3d091c8f0
SHA1 c07c8fc3301191a8a2ccc937a5f806499a15fca0
SHA512 a7700b476065f9f553cd079f2419cb6c94b93a0544f6d6c9c31e322a9cb0973adc18fdd1bc2c3b25955de343c626b4d68bf16e41d8740bcb1c30d7cf77154eb1
MD5 SHA1 SHA512

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memory/660-73-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/660-77-0x0000000000450000-0x000000000045A000-memory.dmp

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memory/660-81-0x0000000000705000-0x0000000000716000-memory.dmp

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memory/660-79-0x00000000004C0000-0x00000000004CA000-memory.dmp

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memory/660-78-0x0000000000460000-0x000000000047E000-memory.dmp

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memory/660-67-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/660-75-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/660-64-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/660-70-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/660-65-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/660-68-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1048-56-0x00000000004B0000-0x00000000004C4000-memory.dmp

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memory/1048-63-0x00000000057A0000-0x0000000005802000-memory.dmp

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memory/1048-54-0x0000000000280000-0x0000000000374000-memory.dmp

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memory/1048-55-0x0000000076171000-0x0000000076173000-memory.dmp

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memory/1048-58-0x0000000005560000-0x00000000055FA000-memory.dmp

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memory/1048-57-0x0000000000660000-0x000000000066C000-memory.dmp

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memory/1296-80-0x000000006F080000-0x000000006F62B000-memory.dmp

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memory/1296-82-0x000000006F080000-0x000000006F62B000-memory.dmp

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