nanocore | 7a39b98f63fe76ba73304f68691ee8413955d72be56195000dd7d7eb0627b2ba

General

Target
9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe
Size 203KB
Sample240219-e4wslahh32
SHA256 9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150
MD5 dbceffb1a0dc1e9d8339bfdf8f587c1a
SHA1 0d36d97eb42bf9b46feab2d332aaa42e8c0c7dbd
SHA512 a77e1a66d31db29ea8985e1a88b9b216b0eddb73cb484fed4c0de3384f8d22d9b819c9eb0d5cdd14387e97f4406423e6f5d95e347e2bbd644a88d9af6e3fedff
SSDEEP 3072:szEqV6B1jHa6dtJ10jgvzcgi+oG/j9iaMP2s/HIKPQAKhm6+aocJXRBFLCnXwEfs:sLV6Bta6dtJmakIM5rfaocNFCbysvXi
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 Subsystem = "C:\\Program Files (x86)\\SMTP Subsystem\\smtpss.exe"	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.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	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\SMTP Subsystem\smtpss.exe	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe
File created	C:\Program Files (x86)\SMTP Subsystem\smtpss.exe	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
2668	schtasks.exe
2484	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
680	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe
680	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe
680	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe
680	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe
680	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe
680	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
680	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	680	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 680 wrote to memory of 2668	680	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe	84
PID 680 wrote to memory of 2668	680	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe	84
PID 680 wrote to memory of 2668	680	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe	84
PID 680 wrote to memory of 2484	680	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe	86
PID 680 wrote to memory of 2484	680	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe	86
PID 680 wrote to memory of 2484	680	9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe	86

C:\Users\Admin\AppData\Local\Temp\9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.exe
"C:\Users\Admin\AppData\Local\Temp\9b68bcf4e287320a6e257953091213ac7e016d7aabc63ee02b0e73e75a782150.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:680
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "SMTP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4FA6.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2668
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "SMTP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5005.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2484

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmp4FA6.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp4FA6.tmp
Size 1KB
SHA256 e4c92a94362c892d31099bbd1f3b8780671bf075e21c2ae9a5afa3266c8a56b3
MD5 38e25cbe2b5ce90c55d7505dcd89b417
SHA1 31b627a2a62d4eb0d7ba9abc3d9efd94c65e8478
SHA512 594ea07b8d29553facc4e5efa570a57cb434ed78b61454c7adc7ce0cf2710dc059a69c50eaf588cff5a48a253bbde315124da091d1babde297e2fdb65c1faaee
MD5 SHA1 SHA512

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tmp5005.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp5005.tmp
Size 1KB
SHA256 3d568a47a8944a47f4aed6982755ac7ff7dda469cc1c81c213ecaa5d89de1f83
MD5 0339b45ef206f4becc88be0d65e24b9e
SHA1 6503a1851f4ccd8c80a31f96bd7ae40d962c9fad
SHA512 c98f4513db34d50510dd986e0d812545c442bd5bef26932032b165759627fab4e00c95fe907ab3416a8a1042bfa77aa516c479f1ff7d1ec2f21ae66df8f72551
MD5 SHA1 SHA512

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memory/680-0-0x0000000074E10000-0x00000000753C1000-memory.dmp

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memory/680-1-0x0000000001020000-0x0000000001030000-memory.dmp

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memory/680-2-0x0000000074E10000-0x00000000753C1000-memory.dmp

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memory/680-10-0x0000000001020000-0x0000000001030000-memory.dmp

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memory/680-11-0x0000000074E10000-0x00000000753C1000-memory.dmp

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memory/680-12-0x0000000001020000-0x0000000001030000-memory.dmp

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memory/680-13-0x0000000001020000-0x0000000001030000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads