nanocore | e8713b84ea80e0553edb04dfbdcf5feb8d5ff57ee116c5f77e092b08a9898f8b

Resubmissions

27/07/2024, 19:36

240727-ybcnssyanh

26/07/2024, 02:33

22/07/2024, 16:15

22/07/2024, 15:58

22/07/2024, 15:53

22/07/2024, 15:37

Analysis

max time kernel
102s
max time network
118s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
22/07/2024, 15:37

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General

Target
Jako Gen Source Code.exe
Size 203KB
Sample240722-s2ryhsvhnr
SHA256 e8713b84ea80e0553edb04dfbdcf5feb8d5ff57ee116c5f77e092b08a9898f8b
MD5 cf4eb39d02324430fde9a09b0c36e321
SHA1 5c6e77058e920d61ba74207027df073763905310
SHA512 332b5f3e25db8771b8f7afd9ded17e13e40bfa606377f4ba3531e46d9a6f080e81d7b826e8a5631b7131d50141e901d269cd78d595255705fdd390439b6bfaec
SSDEEP 3072:UzEqV6B1jHa6dtJ10jgvzcgi+oG/j9iaMP2s/HIq3grv/ZCSAjdcedtBWn6BXiLL:ULV6Bta6dtJmakIM5LISpWbBNV82UG
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

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

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\SMTP Monitor = "C:\\Program Files (x86)\\SMTP Monitor\\smtpmon.exe"	Jako Gen Source Code.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	Jako Gen Source Code.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SMTP Monitor\smtpmon.exe	Jako Gen Source Code.exe
File opened for modification	C:\Program Files (x86)\SMTP Monitor\smtpmon.exe	Jako Gen Source Code.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
968	schtasks.exe
1724	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2552	Jako Gen Source Code.exe
2552	Jako Gen Source Code.exe
2552	Jako Gen Source Code.exe
2552	Jako Gen Source Code.exe
2552	Jako Gen Source Code.exe
2552	Jako Gen Source Code.exe
2552	Jako Gen Source Code.exe
2552	Jako Gen Source Code.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2552	Jako Gen Source Code.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2552	Jako Gen Source Code.exe
Token: 33	1984	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1984	AUDIODG.EXE
Token: 33	1984	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1984	AUDIODG.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2552 wrote to memory of 968	2552	Jako Gen Source Code.exe	29
PID 2552 wrote to memory of 968	2552	Jako Gen Source Code.exe	29
PID 2552 wrote to memory of 968	2552	Jako Gen Source Code.exe	29
PID 2552 wrote to memory of 968	2552	Jako Gen Source Code.exe	29
PID 2552 wrote to memory of 1724	2552	Jako Gen Source Code.exe	31
PID 2552 wrote to memory of 1724	2552	Jako Gen Source Code.exe	31
PID 2552 wrote to memory of 1724	2552	Jako Gen Source Code.exe	31
PID 2552 wrote to memory of 1724	2552	Jako Gen Source Code.exe	31

C:\Users\Admin\AppData\Local\Temp\Jako Gen Source Code.exe
"C:\Users\Admin\AppData\Local\Temp\Jako Gen Source Code.exe"
1⤵
- 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:2552
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "SMTP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5033.tmp"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:968
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "SMTP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5301.tmp"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1724

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:1708

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x468
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1984

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

tmp5033.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp5033.tmp
Size 1KB
SHA256 77701b041ffaa9b1733bcea92c0d4a954675dd7f6d62a7a7ad555cc2c05c5b35
MD5 db325bebc82dd6d76c00239301b1170c
SHA1 78dad3a14d69a80147c6f8bd7be1d5cd226015e6
SHA512 6e7e3067a568efcfe5c58ba6c105353a36c2f8169b05e6569f5131229408d864dec8647a193d9bff59fe7fc264d84525bd149d5e5f90ecbad24152505f7ba227
MD5 SHA1 SHA512

Submit Download

tmp5301.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp5301.tmp
Size 1KB
SHA256 1e45d509d390405f93e9f3b64ff497e61cf9bf791c015dde4499184b7a681eb3
MD5 ffa9e95100598072ca693c672478895f
SHA1 518514c3112c51b2b21d36d3262bec72e83d025d
SHA512 010d14ae46a23cef14cf1de9a06c8e6ff26ca86c10ebdd3d5f16f4ffbeacc3df7ca18fafda097e00bf747fb997c5c4f9d62646e47a3b501da7c630689c28d6df
MD5 SHA1 SHA512

Submit Download

memory/2552-0-0x0000000074A21000-0x0000000074A22000-memory.dmp

Download

memory/2552-1-0x0000000074A20000-0x0000000074FCB000-memory.dmp

Download

memory/2552-2-0x0000000074A20000-0x0000000074FCB000-memory.dmp

Download

memory/2552-10-0x0000000074A20000-0x0000000074FCB000-memory.dmp

Download