nanocore | d2da6a437828e06a68fb1d9ec12df9bccd142b5f5fb0f489efb2234092887dab

General

Target

savedecrypter.exe
Size

203KB
MD5

f3a55d642b29d5e6fc09d0cb3fbc7977
SHA1

15b8a9cdf8c4553626b27e55552b426c9986de0f
SHA256

d2da6a437828e06a68fb1d9ec12df9bccd142b5f5fb0f489efb2234092887dab
SHA512

8beaecd389ca34e03eace71dfc4be4b9615046eeec8470f87b1ffda92307a4f31ecaf0f0f94481746dfaa55ebb445d3a39b1ff0c517748279cc6b56a73810594
SSDEEP

6144:MLV6Bta6dtJmakIM5B3UeogXB2GPNQRzxev9:MLV6BtpmkzgRvlazEv9

Score

10^/10

nanocore defense_evasion discovery 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

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\IMAP Monitor = "C:\\Program Files (x86)\\IMAP Monitor\\imapmon.exe"	savedecrypter.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

defense_evasion trojan

System Information Discovery

T1082

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

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\IMAP Monitor\imapmon.exe	savedecrypter.exe
File opened for modification	C:\Program Files (x86)\IMAP Monitor\imapmon.exe	savedecrypter.exe

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	savedecrypter.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
1508	schtasks.exe
4572	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3424	savedecrypter.exe
3424	savedecrypter.exe
3424	savedecrypter.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3424	savedecrypter.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3424	savedecrypter.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3424 wrote to memory of 1508	3424	savedecrypter.exe	87
PID 3424 wrote to memory of 1508	3424	savedecrypter.exe	87
PID 3424 wrote to memory of 1508	3424	savedecrypter.exe	87
PID 3424 wrote to memory of 4572	3424	savedecrypter.exe	89
PID 3424 wrote to memory of 4572	3424	savedecrypter.exe	89
PID 3424 wrote to memory of 4572	3424	savedecrypter.exe	89

C:\Users\Admin\AppData\Local\Temp\savedecrypter.exe
"C:\Users\Admin\AppData\Local\Temp\savedecrypter.exe"
1⤵
- 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:3424
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "IMAP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB41D.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1508
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "IMAP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpB48C.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:4572

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

System Information Discovery

1

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\tmpB41D.tmp

Filesize
1KB

MD5
fda2fc99c93e25de4b35c680744f09f2

SHA1
66e40fa3876a6ab7b2947f244e66f33847adb923

SHA256
8b72f0bfa468e5a9f80e73407dce3c95d6d6d1b2159489e2bd2e59582cde0d12

SHA512
a21af99b4c0d023d6a42569e52a669ae01f0a6232a5045dc7e1abf3a7ae51eb1a1904887532d3147a121e18d86b5614fc7adcb55b97510ba6ccee9e5d1bdb772

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB48C.tmp

Filesize
1KB

MD5
d2d6911d94b06e405e7687a2437eafec

SHA1
9f28f9e7d8d5179d44ddaa6ca266984ed7521dea

SHA256
2dc87169ad53fbdd7abb08f49777cb8fb05adbff4e6f6616b4c89942af8cad0f

SHA512
b5983de701ff98e944283a25f1770c1e792d52148dc1671f1d19203f8b9d10b056abcf79a17ca536a5f88ccf52f6445d8f3e75fce628666640ad8bad697dcfd1

Download Submit
memory/3424-0-0x0000000074CB2000-0x0000000074CB3000-memory.dmp

Filesize
4KB

Download
memory/3424-1-0x0000000074CB0000-0x0000000075261000-memory.dmp

Filesize
5.7MB

Download
memory/3424-2-0x0000000074CB0000-0x0000000075261000-memory.dmp

Filesize
5.7MB

Download
memory/3424-10-0x0000000074CB0000-0x0000000075261000-memory.dmp

Filesize
5.7MB

Download
memory/3424-11-0x0000000074CB2000-0x0000000074CB3000-memory.dmp

Filesize
4KB

Download
memory/3424-12-0x0000000074CB0000-0x0000000075261000-memory.dmp

Filesize
5.7MB

Download
memory/3424-13-0x0000000074CB0000-0x0000000075261000-memory.dmp

Filesize
5.7MB

Download
memory/3424-14-0x0000000074CB0000-0x0000000075261000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads