nanocore | 5ab642cc797d8ad4df98b94cd6345a7a6398b11759c5dc10471fcacaa4d97469

General

Target

5ab642cc797d8ad4df98b94cd6345a7a6398b11759c5dc10471fcacaa4d97469.exe
Size

336KB
MD5

8580b4b852ac18927a687380054dd3d0
SHA1

51360ec7b34ddd71922867945df8995075d71760
SHA256

5ab642cc797d8ad4df98b94cd6345a7a6398b11759c5dc10471fcacaa4d97469
SHA512

75eaa9d6d510698ef9eec7e4108168185a96d9a276db0a7cf0c932843370f3141ac10cba4c6d9295ed8b13a3f3793847165db9ab29711491fd7d3372445cf572
SSDEEP

6144:6geDH2XOIDQg+3XjfgBqhiHAyQKWat7Y0kxBn8yVmEAmg+D:6HH2X9D2TI3Hp3WaNYDxBn8yMEAmDD

Score

10^/10

nanocore discovery 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
Nanocore family
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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	5ab642cc797d8ad4df98b94cd6345a7a6398b11759c5dc10471fcacaa4d97469.exe

Executes dropped EXE 1 IoCs

pid	Process
4092	pcs.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\SMTP Subsystem = "C:\\Program Files (x86)\\SMTP Subsystem\\smtpss.exe"	pcs.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	pcs.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SMTP Subsystem\smtpss.exe	pcs.exe
File opened for modification	C:\Program Files (x86)\SMTP Subsystem\smtpss.exe	pcs.exe

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pcs.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
1032	schtasks.exe
4532	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4092	pcs.exe
4092	pcs.exe
4092	pcs.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4092	pcs.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4092	pcs.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2956 wrote to memory of 4092	2956	5ab642cc797d8ad4df98b94cd6345a7a6398b11759c5dc10471fcacaa4d97469.exe	83
PID 2956 wrote to memory of 4092	2956	5ab642cc797d8ad4df98b94cd6345a7a6398b11759c5dc10471fcacaa4d97469.exe	83
PID 2956 wrote to memory of 4092	2956	5ab642cc797d8ad4df98b94cd6345a7a6398b11759c5dc10471fcacaa4d97469.exe	83
PID 4092 wrote to memory of 1032	4092	pcs.exe	84
PID 4092 wrote to memory of 1032	4092	pcs.exe	84
PID 4092 wrote to memory of 1032	4092	pcs.exe	84
PID 4092 wrote to memory of 4532	4092	pcs.exe	86
PID 4092 wrote to memory of 4532	4092	pcs.exe	86
PID 4092 wrote to memory of 4532	4092	pcs.exe	86

C:\Users\Admin\AppData\Local\Temp\5ab642cc797d8ad4df98b94cd6345a7a6398b11759c5dc10471fcacaa4d97469.exe
"C:\Users\Admin\AppData\Local\Temp\5ab642cc797d8ad4df98b94cd6345a7a6398b11759c5dc10471fcacaa4d97469.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2956
- C:\Users\Admin\AppData\Local\Temp\pcs.exe
  "C:\Users\Admin\AppData\Local\Temp\pcs.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4092
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SMTP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp95D7.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1032
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SMTP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9636.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4532

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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\Local\Temp\pcs.exe

Filesize
203KB

MD5
6b5ec06af51f8cb10768153b673c86a0

SHA1
b6c3c3413e41521f559297cc09a21642d8c00bb6

SHA256
880302c0ea0680ccba86fc4116bd5b1a92f1203e9275bdb61f6cfdb81d94cb89

SHA512
003cdc2715c0c28da01ebb483261f84b290ca4060236a79829d00c09c8fa44529d990e68e580b563459a7be18644c7aacfbf2610d576f6abaf917cf0cc51e4ca

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp95D7.tmp

Filesize
1KB

MD5
83f0f3cfbfc1fa83933cbe85cbedb6e8

SHA1
eaa6a1f85061f09fb3799ef86c720c386ddbaf57

SHA256
6171edd222adbf188364934fb1f84e0fb418a9d6e89074f66fe345ddbd8f865f

SHA512
bcc1f2db901e072b0190c16619e290cd17c2f8c5ff8670cac21ad16b5a7bf1b38ad1eef39abe9452a5e5409260b3fad29a91df7ba4f03947730e624ab2dab480

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp9636.tmp

Filesize
1KB

MD5
0339b45ef206f4becc88be0d65e24b9e

SHA1
6503a1851f4ccd8c80a31f96bd7ae40d962c9fad

SHA256
3d568a47a8944a47f4aed6982755ac7ff7dda469cc1c81c213ecaa5d89de1f83

SHA512
c98f4513db34d50510dd986e0d812545c442bd5bef26932032b165759627fab4e00c95fe907ab3416a8a1042bfa77aa516c479f1ff7d1ec2f21ae66df8f72551

Download Submit
memory/2956-0-0x00007FFB66543000-0x00007FFB66545000-memory.dmp

Filesize
8KB

Download
memory/2956-1-0x00000000008F0000-0x0000000000948000-memory.dmp

Filesize
352KB

Download
memory/2956-2-0x0000000001310000-0x0000000001340000-memory.dmp

Filesize
192KB

Download
memory/2956-4-0x00007FFB66540000-0x00007FFB67001000-memory.dmp

Filesize
10.8MB

Download
memory/2956-13-0x00007FFB66540000-0x00007FFB67001000-memory.dmp

Filesize
10.8MB

Download
memory/4092-16-0x0000000075410000-0x00000000759C1000-memory.dmp

Filesize
5.7MB

Download
memory/4092-15-0x0000000075410000-0x00000000759C1000-memory.dmp

Filesize
5.7MB

Download
memory/4092-14-0x0000000075412000-0x0000000075413000-memory.dmp

Filesize
4KB

Download
memory/4092-24-0x0000000075410000-0x00000000759C1000-memory.dmp

Filesize
5.7MB

Download
memory/4092-25-0x0000000075412000-0x0000000075413000-memory.dmp

Filesize
4KB

Download
memory/4092-26-0x0000000075410000-0x00000000759C1000-memory.dmp

Filesize
5.7MB

Download
memory/4092-27-0x0000000075410000-0x00000000759C1000-memory.dmp

Filesize
5.7MB

Download
memory/4092-28-0x0000000075410000-0x00000000759C1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads