nanocore | 82c4fbf16ea2312a8a443d451962943fe892ffa221a591123a25b9f4b831fb01

General

Target

82c4fbf16ea2312a8a443d451962943fe892ffa221a591123a25b9f4b831fb01.exe
Size

414KB
MD5

3481e7d630833967991d784d96caba66
SHA1

f96efce0562fc81c0b2fd6bb30ad15138f3dd665
SHA256

82c4fbf16ea2312a8a443d451962943fe892ffa221a591123a25b9f4b831fb01
SHA512

3abae7f498b6c2b553db85df9fe7d2532e77d7b99444c318de844eebc0625f36a2726ee47487c9feb8206031b4d565aa612130ef8f77995f7cc5bea2bbe48781
SSDEEP

6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RUH:ITNYrnE3bm/CiejewY5vo

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

[email protected]:46218

178.32.224.116:46218

Mutex

4af74541-e3f1-469c-8af7-efe4071b81cf

Attributes

activate_away_mode
false
backup_connection_host
178.32.224.116
backup_dns_server
buffer_size
65535
build_time
2018-07-28T12:59:38.488799236Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
46218
default_group
tourex
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
4af74541-e3f1-469c-8af7-efe4071b81cf
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
[email protected]
primary_dns_server
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
true
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

Processes:

82c4fbf16ea2312a8a443d451962943fe892ffa221a591123a25b9f4b831fb01.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	82c4fbf16ea2312a8a443d451962943fe892ffa221a591123a25b9f4b831fb01.exe

Executes dropped EXE 1 IoCs

Processes:

ximo2ubzn1i.exe

pid	Process
2476	ximo2ubzn1i.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

82c4fbf16ea2312a8a443d451962943fe892ffa221a591123a25b9f4b831fb01.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\c5e4gxfvd4v = "C:\\Users\\Admin\\AppData\\Roaming\\c5e4gxfvd4v\\ximo2ubzn1i.exe"	82c4fbf16ea2312a8a443d451962943fe892ffa221a591123a25b9f4b831fb01.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

regasm.exe

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

Suspicious use of SetThreadContext 1 IoCs

Processes:

ximo2ubzn1i.exe

description	pid	Process	procid_target
PID 2476 set thread context of 4928	2476	ximo2ubzn1i.exe	87

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

System Information Discovery
T1082

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.

discovery

System Language Discovery

T1614.001

Processes:

ximo2ubzn1i.exeregasm.exe82c4fbf16ea2312a8a443d451962943fe892ffa221a591123a25b9f4b831fb01.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ximo2ubzn1i.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	82c4fbf16ea2312a8a443d451962943fe892ffa221a591123a25b9f4b831fb01.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

regasm.exe

pid	Process
4928	regasm.exe
4928	regasm.exe
4928	regasm.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

regasm.exe

pid	Process
4928	regasm.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

regasm.exe

description	pid	Process
Token: SeDebugPrivilege	4928	regasm.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

82c4fbf16ea2312a8a443d451962943fe892ffa221a591123a25b9f4b831fb01.exeximo2ubzn1i.exe

description	pid	Process	procid_target
PID 3668 wrote to memory of 2476	3668	82c4fbf16ea2312a8a443d451962943fe892ffa221a591123a25b9f4b831fb01.exe	86
PID 3668 wrote to memory of 2476	3668	82c4fbf16ea2312a8a443d451962943fe892ffa221a591123a25b9f4b831fb01.exe	86
PID 3668 wrote to memory of 2476	3668	82c4fbf16ea2312a8a443d451962943fe892ffa221a591123a25b9f4b831fb01.exe	86
PID 2476 wrote to memory of 4928	2476	ximo2ubzn1i.exe	87
PID 2476 wrote to memory of 4928	2476	ximo2ubzn1i.exe	87
PID 2476 wrote to memory of 4928	2476	ximo2ubzn1i.exe	87
PID 2476 wrote to memory of 4928	2476	ximo2ubzn1i.exe	87
PID 2476 wrote to memory of 4928	2476	ximo2ubzn1i.exe	87
PID 2476 wrote to memory of 4928	2476	ximo2ubzn1i.exe	87
PID 2476 wrote to memory of 4928	2476	ximo2ubzn1i.exe	87
PID 2476 wrote to memory of 4928	2476	ximo2ubzn1i.exe	87

C:\Users\Admin\AppData\Local\Temp\82c4fbf16ea2312a8a443d451962943fe892ffa221a591123a25b9f4b831fb01.exe
"C:\Users\Admin\AppData\Local\Temp\82c4fbf16ea2312a8a443d451962943fe892ffa221a591123a25b9f4b831fb01.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3668
- C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
  "C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2476
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
    3⤵
    - Checks whether UAC is enabled
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:4928

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe

Filesize
414KB

MD5
cd3ed4b4ccc6658634f0d5ee216dc60f

SHA1
de315f6d7574a712232714b828b535bd58b14a2b

SHA256
5595a620aa703c5e2b3081dd45b6d68209e5d0890bf2b6a5f24731f2efdb2f49

SHA512
7cd52d40a0660319a3ff69287eefe233e7c27da5168f9cd4f6682902d368b814b81c3a4ebe91bff893c12af9d7e42b3e9dcdd9983036e2899b552d2ccc957ff1

Download Submit
memory/2476-35-0x00000000746E0000-0x0000000074E90000-memory.dmp

Filesize
7.7MB

Download
memory/2476-33-0x00000000746E0000-0x0000000074E90000-memory.dmp

Filesize
7.7MB

Download
memory/2476-22-0x00000000746E0000-0x0000000074E90000-memory.dmp

Filesize
7.7MB

Download
memory/2476-21-0x00000000746E0000-0x0000000074E90000-memory.dmp

Filesize
7.7MB

Download
memory/3668-5-0x0000000004ED0000-0x0000000004EDA000-memory.dmp

Filesize
40KB

Download
memory/3668-6-0x00000000053D0000-0x000000000540C000-memory.dmp

Filesize
240KB

Download
memory/3668-0-0x00000000746EE000-0x00000000746EF000-memory.dmp

Filesize
4KB

Download
memory/3668-20-0x00000000746E0000-0x0000000074E90000-memory.dmp

Filesize
7.7MB

Download
memory/3668-4-0x00000000746E0000-0x0000000074E90000-memory.dmp

Filesize
7.7MB

Download
memory/3668-3-0x0000000004E20000-0x0000000004EB2000-memory.dmp

Filesize
584KB

Download
memory/3668-1-0x00000000003C0000-0x000000000042E000-memory.dmp

Filesize
440KB

Download
memory/3668-2-0x00000000054C0000-0x0000000005A64000-memory.dmp

Filesize
5.6MB

Download
memory/4928-27-0x00000000746E0000-0x0000000074E90000-memory.dmp

Filesize
7.7MB

Download
memory/4928-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4928-28-0x0000000005770000-0x000000000580C000-memory.dmp

Filesize
624KB

Download
memory/4928-30-0x0000000006330000-0x000000000633A000-memory.dmp

Filesize
40KB

Download
memory/4928-31-0x00000000063C0000-0x00000000063DE000-memory.dmp

Filesize
120KB

Download
memory/4928-32-0x0000000006600000-0x000000000660A000-memory.dmp

Filesize
40KB

Download
memory/4928-25-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4928-23-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4928-36-0x00000000746E0000-0x0000000074E90000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads