nanocore | 9161ed38d16be56e3242e33c3ccccad63f206db7a44e172163916322de79bd65

General

Target

New Order List & Specification.scr
Size

1.3MB
MD5

39f59475d4b4672638a90ac2e475cd90
SHA1

0fdabe47559fab6484f383fab08a451be9879f65
SHA256

13a65e23f4c45234d2e73ce746b29a13b10df6f5a7508087029432aa62d458c5
SHA512

f26355f9da0afa11fcc8782bad79c293735ba7a099f54b9bd60195122f9e7687ac322f93eba5d0caa7c0f2d49e7a4ce4f464bbb6cf08efb71e0cc998511b8b9d

Score

10^/10

nanocore remcos october-$$$$keylogger persistence rat spyware stealer trojan

Malware Config

Extracted

Family

remcos

Botnet

OCTOBER-$$$$

C2

mgc0147.hopto.org:2930

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-3MPDYA
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
notepad;solitaire;

Signatures

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore
Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Executes dropped EXE 2 IoCs

Processes:

osgexnsck.pifRegSvcs.exe

pid process

1020 osgexnsck.pif
1064 RegSvcs.exe

pid	process
1020	osgexnsck.pif
1064	RegSvcs.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

osgexnsck.pif

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	osgexnsck.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WindowsUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\43719123\\OSGEXN~1.PIF C:\\Users\\Admin\\AppData\\Roaming\\43719123\\tqsxtg.ekv"	osgexnsck.pif

Suspicious use of SetThreadContext 1 IoCs

Processes:

osgexnsck.pif

description pid process target process

PID 1020 set thread context of 1064 1020 osgexnsck.pif RegSvcs.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

osgexnsck.pif

pid process

1020 osgexnsck.pif
1020 osgexnsck.pif
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

osgexnsck.pifRegSvcs.exe

pid process

1020 osgexnsck.pif
1064 RegSvcs.exe
1064 RegSvcs.exe

description	pid	process	target process
PID 1020 set thread context of 1064	1020	osgexnsck.pif	RegSvcs.exe

pid	process
1020	osgexnsck.pif
1020	osgexnsck.pif

pid	process
1020	osgexnsck.pif
1064	RegSvcs.exe
1064	RegSvcs.exe

Suspicious use of WriteProcessMemory 29 IoCs

Processes:

New Order List & Specification.scrosgexnsck.pif

description	pid	process	target process
PID 1860 wrote to memory of 1020	1860	New Order List & Specification.scr	osgexnsck.pif
PID 1860 wrote to memory of 1020	1860	New Order List & Specification.scr	osgexnsck.pif
PID 1860 wrote to memory of 1020	1860	New Order List & Specification.scr	osgexnsck.pif
PID 1020 wrote to memory of 3584	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 3584	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 3584	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 4064	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 4064	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 4064	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 1072	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 1072	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 1072	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 344	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 344	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 344	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 3660	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 3660	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 3660	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 1428	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 1428	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 1428	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 876	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 876	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 876	1020	osgexnsck.pif	mshta.exe
PID 1020 wrote to memory of 1064	1020	osgexnsck.pif	RegSvcs.exe
PID 1020 wrote to memory of 1064	1020	osgexnsck.pif	RegSvcs.exe
PID 1020 wrote to memory of 1064	1020	osgexnsck.pif	RegSvcs.exe
PID 1020 wrote to memory of 1064	1020	osgexnsck.pif	RegSvcs.exe
PID 1020 wrote to memory of 1064	1020	osgexnsck.pif	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\New Order List & Specification.scr
"C:\Users\Admin\AppData\Local\Temp\New Order List & Specification.scr" /S
1⤵
- Suspicious use of WriteProcessMemory
PID:1860

C:\Users\Admin\AppData\Roaming\43719123\osgexnsck.pif
"C:\Users\Admin\AppData\Roaming\43719123\osgexnsck.pif" tqsxtg.ekv
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1020

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe"
3⤵
PID:3584

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe"
3⤵
PID:4064

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe"
3⤵
PID:1072

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe"
3⤵
PID:344

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe"
3⤵
PID:3660

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe"
3⤵
PID:1428

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe"
3⤵
PID:876

C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
"C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:1064

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
MD5
0e06054beb13192588e745ee63a84173

SHA1
30b7d4d1277bafd04a83779fd566a1f834a8d113

SHA256
c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

SHA512
251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

Download Submit
C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
MD5
0e06054beb13192588e745ee63a84173

SHA1
30b7d4d1277bafd04a83779fd566a1f834a8d113

SHA256
c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

SHA512
251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

Download Submit
C:\Users\Admin\AppData\Roaming\43719123\fcdi.mp3
MD5
d40d39871eb1e08fb898f0f58dd9c138

SHA1
c3e45c711297c286f8cf2e8ba1b35c7d545f1771

SHA256
a1ec2daca2043eb4681d6b73b1e30ef93ad39ff794a1728d8d30a9cb2092c708

SHA512
6a57255ff93d41d3e70b6e8a290aaf43f49d94f0f08dbe61bdd3f0f9cb5da0632acbb4b19d71cfc3a6b919cbca7c6e3952a347730238f598e75d886c405175ae

Download Submit
C:\Users\Admin\AppData\Roaming\43719123\osgexnsck.pif
MD5
279dae7236f5f2488a4bacde6027f730

SHA1
29a012e5259739f24480cedfd6d5f2d860cfcdb3

SHA256
415850f2706681a6d80708fca8ac18dcf97e58b8f3fdc7bc4b558ab15fc0a03f

SHA512
b81276fc4d915a9721dae15aa064781a1dba665ff4864ccbdf624e8049c1b3c12a2b374f11cffcf6e4a5217766836edbc5f2376ffa8765f9070cbd87d7ae2fe8

Download Submit
C:\Users\Admin\AppData\Roaming\43719123\osgexnsck.pif
MD5
279dae7236f5f2488a4bacde6027f730

SHA1
29a012e5259739f24480cedfd6d5f2d860cfcdb3

SHA256
415850f2706681a6d80708fca8ac18dcf97e58b8f3fdc7bc4b558ab15fc0a03f

SHA512
b81276fc4d915a9721dae15aa064781a1dba665ff4864ccbdf624e8049c1b3c12a2b374f11cffcf6e4a5217766836edbc5f2376ffa8765f9070cbd87d7ae2fe8

Download Submit
C:\Users\Admin\AppData\Roaming\43719123\smqewogxj.iow
MD5
897d811670ccf4422316b304b8c09ec9

SHA1
5cb58926daa398a79c8d7299feac61492c07e4f0

SHA256
b39a4320e002d1a7857ead4c2e5bb84f89a6e1377bfcf39e439d9a2ef89766da

SHA512
bcb9be58d1f1b75d25dc08d1e0d6c1c2e039798dbdc9f6036c6e017eece57c5f370522f05b3ad5aa981855853fe5422b58b04127116492e9f24cfd23af4d0a56

Download Submit
C:\Users\Admin\AppData\Roaming\43719123\tqsxtg.ekv
MD5
265df73b89dcbb0ba82837951b5c3c2e

SHA1
ebb66ef902970e1832e8250604e13bc6dc279e7e

SHA256
4a7bb249741fbb7199687fc5a99ee88cd5f9005c5cf53c17eedd7edf2882444e

SHA512
73829ee17f9a2a625825b9a8b2b8ebec5d8714689876a37438126335c6e939767b380e27b06dfb841480224f5f270a0f6befbb3b2ec0ae41ef35e4e0cc30a6e8

Download Submit
memory/344-123-0x0000000000000000-mapping.dmp

Download
memory/876-126-0x0000000000000000-mapping.dmp

Download
memory/1020-115-0x0000000000000000-mapping.dmp

Download
memory/1064-129-0x000000000104FC39-mapping.dmp

Download
memory/1064-128-0x0000000001020000-0x00000000015AD000-memory.dmp

Filesize
5.6MB

Download
memory/1064-132-0x0000000001020000-0x00000000015AD000-memory.dmp

Filesize
5.6MB

Download
memory/1064-133-0x0000000001020000-0x00000000015AD000-memory.dmp

Filesize
5.6MB

Download
memory/1072-122-0x0000000000000000-mapping.dmp

Download
memory/1428-125-0x0000000000000000-mapping.dmp

Download
memory/3584-120-0x0000000000000000-mapping.dmp

Download
memory/3660-124-0x0000000000000000-mapping.dmp

Download
memory/4064-121-0x0000000000000000-mapping.dmp

Download

Analysis

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