nanocore | 940ad66c876976f4a05f12710687f5abb76443f693dd3986d1ff7a4c73fc866f

Analysis

max time kernel
154s
max time network
145s
platform
windows7_x64
resource
win7-en-20210920
submitted
14-10-2021 08:11

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General

Target

KRSEL0000056286.JPG.scr
Size

1.0MB
MD5

d6f040b4d7d217b8525dff843feba635
SHA1

8ed8beaceddf8e8e9ba4b601d1e985e5c7c2d7d9
SHA256

940ad66c876976f4a05f12710687f5abb76443f693dd3986d1ff7a4c73fc866f
SHA512

fcbd072ba0b64e41931cf9e5bb8b2b73fd18ee9788907f1791cb13a52450e5bc81732f7fcd0d8d4af737cca4e9b59658a5292129848dbb9a7197aa86e405a4b7

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

strongodss.ddns.net:48562

185.19.85.175:48562

Mutex

ba2baad0-dd3f-4844-a1e3-4d042f9ae8b6

Attributes

activate_away_mode
false
backup_connection_host
185.19.85.175
backup_dns_server
buffer_size
65538
build_time
2021-04-20T00:12:13.961451136Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
48562
default_group
HOBBIT
enable_debug_mode
true
gc_threshold
1.0485772e+07
keep_alive_timeout
30000
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.0485772e+07
mutex
ba2baad0-dd3f-4844-a1e3-4d042f9ae8b6
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
strongodss.ddns.net
primary_dns_server
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
set_critical_process
false
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8009

Signatures

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore
Executes dropped EXE 2 IoCs

Processes:

upstsdssm.pifRegSvcs.exe

pid process

1244 upstsdssm.pif
1652 RegSvcs.exe
Loads dropped DLL 5 IoCs

Processes:

KRSEL0000056286.JPG.scrupstsdssm.pif

pid process

1540 KRSEL0000056286.JPG.scr
1540 KRSEL0000056286.JPG.scr
1540 KRSEL0000056286.JPG.scr
1540 KRSEL0000056286.JPG.scr
1244 upstsdssm.pif

pid	process
1244	upstsdssm.pif
1652	RegSvcs.exe

pid	process
1540	KRSEL0000056286.JPG.scr
1540	KRSEL0000056286.JPG.scr
1540	KRSEL0000056286.JPG.scr
1540	KRSEL0000056286.JPG.scr
1244	upstsdssm.pif

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

RegSvcs.exeupstsdssm.pif

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\UDP Subsystem = "C:\\Program Files (x86)\\UDP Subsystem\\udpss.exe"	RegSvcs.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	upstsdssm.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Chrome = "C:\\Users\\Admin\\AppData\\Local\\Temp\\33911166\\UPSTSD~1.PIF C:\\Users\\Admin\\AppData\\Local\\Temp\\33911166\\sqbr.wlw"	upstsdssm.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\AutoUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\33911166\\Update.vbs"	upstsdssm.pif

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

RegSvcs.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA RegSvcs.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

upstsdssm.pif

description pid process target process

PID 1244 set thread context of 1652 1244 upstsdssm.pif RegSvcs.exe

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

description	pid	process	target process
PID 1244 set thread context of 1652	1244	upstsdssm.pif	RegSvcs.exe

Drops file in Program Files directory 2 IoCs

Processes:

RegSvcs.exe

description	ioc	process
File created	C:\Program Files (x86)\UDP Subsystem\udpss.exe	RegSvcs.exe
File opened for modification	C:\Program Files (x86)\UDP Subsystem\udpss.exe	RegSvcs.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
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
T1053

Processes:

schtasks.exeschtasks.exe

pid process

1156 schtasks.exe
1588 schtasks.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

RegSvcs.exe

pid process

1652 RegSvcs.exe
1652 RegSvcs.exe
1652 RegSvcs.exe
1652 RegSvcs.exe
1652 RegSvcs.exe
1652 RegSvcs.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegSvcs.exe

pid process

1652 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 1652 RegSvcs.exe
Token: SeDebugPrivilege 1652 RegSvcs.exe

pid	process
1156	schtasks.exe
1588	schtasks.exe

pid	process
1652	RegSvcs.exe
1652	RegSvcs.exe
1652	RegSvcs.exe
1652	RegSvcs.exe
1652	RegSvcs.exe
1652	RegSvcs.exe

pid	process
1652	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1652	RegSvcs.exe
Token: SeDebugPrivilege	1652	RegSvcs.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

KRSEL0000056286.JPG.scrupstsdssm.pifRegSvcs.exe

description	pid	process	target process
PID 1540 wrote to memory of 1244	1540	KRSEL0000056286.JPG.scr	upstsdssm.pif
PID 1540 wrote to memory of 1244	1540	KRSEL0000056286.JPG.scr	upstsdssm.pif
PID 1540 wrote to memory of 1244	1540	KRSEL0000056286.JPG.scr	upstsdssm.pif
PID 1540 wrote to memory of 1244	1540	KRSEL0000056286.JPG.scr	upstsdssm.pif
PID 1244 wrote to memory of 1652	1244	upstsdssm.pif	RegSvcs.exe
PID 1244 wrote to memory of 1652	1244	upstsdssm.pif	RegSvcs.exe
PID 1244 wrote to memory of 1652	1244	upstsdssm.pif	RegSvcs.exe
PID 1244 wrote to memory of 1652	1244	upstsdssm.pif	RegSvcs.exe
PID 1244 wrote to memory of 1652	1244	upstsdssm.pif	RegSvcs.exe
PID 1244 wrote to memory of 1652	1244	upstsdssm.pif	RegSvcs.exe
PID 1244 wrote to memory of 1652	1244	upstsdssm.pif	RegSvcs.exe
PID 1244 wrote to memory of 1652	1244	upstsdssm.pif	RegSvcs.exe
PID 1244 wrote to memory of 1652	1244	upstsdssm.pif	RegSvcs.exe
PID 1652 wrote to memory of 1156	1652	RegSvcs.exe	schtasks.exe
PID 1652 wrote to memory of 1156	1652	RegSvcs.exe	schtasks.exe
PID 1652 wrote to memory of 1156	1652	RegSvcs.exe	schtasks.exe
PID 1652 wrote to memory of 1156	1652	RegSvcs.exe	schtasks.exe
PID 1652 wrote to memory of 1588	1652	RegSvcs.exe	schtasks.exe
PID 1652 wrote to memory of 1588	1652	RegSvcs.exe	schtasks.exe
PID 1652 wrote to memory of 1588	1652	RegSvcs.exe	schtasks.exe
PID 1652 wrote to memory of 1588	1652	RegSvcs.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\KRSEL0000056286.JPG.scr
"C:\Users\Admin\AppData\Local\Temp\KRSEL0000056286.JPG.scr" /S
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1540
- C:\Users\Admin\AppData\Local\Temp\33911166\upstsdssm.pif
  "C:\Users\Admin\AppData\Local\Temp\33911166\upstsdssm.pif" sqbr.wlw
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1244
- - C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
    "C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"
    3⤵
    - Executes dropped EXE
    - 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:1652
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "UDP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp2E8F.tmp"
      4⤵
      Creates scheduled task(s)
      PID:1156
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "UDP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp30A3.tmp"
      4⤵
      Creates scheduled task(s)
      PID:1588

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

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

C:\Users\Admin\AppData\Local\Temp\33911166\egccradum.rpq

MD5
8a7c869ad69dd7ec00aa3fbd4afa5da0

SHA1
4760a47040fc0f93be6ccc80261db6bc31700e55

SHA256
22b4837bb2b0e795aefd607efe9175ca7ea6da100300cb9277ea84d9cd19d3d3

SHA512
54fbb02f7537692784fc461acda2da8aa831294838fef5602ff5e401f09b8084d369b06045f3ef187391afce8bf346c9896b3565ee8337ce21c0ae6b7b72118f

Download Submit
C:\Users\Admin\AppData\Local\Temp\33911166\gdljljtq.cpl

MD5
a7a133bcd7d03bbf6addc1658bf20dac

SHA1
0a3a664884ba14b7738368307af1e498069d5348

SHA256
ab5e48986b6ba499e11720d12e42bcaa8c6d712e59ccd29369f7425bd1d4a678

SHA512
c205518fb94d1bc33e729e3790355fbaeddd8073966ea44f906c1321fad325b73108ae1575a09efc4e1ffde4dc4485dd53373c8219aa2c820e30b28c5602574e

Download Submit
C:\Users\Admin\AppData\Local\Temp\33911166\sqbr.wlw

MD5
a78521017ea74e5be68beaf3d0adc368

SHA1
1694584c416256de6bfb0ab72c57675910f479b3

SHA256
17dceb208f35a9966672ec161b2ba8d5a893dd51c204f2e62e291be06f7595ec

SHA512
da4c35668e82df4e3bb4a8bee982a809e495dbb375ece7a330b08436f4b8acc5e1508f31bd00c2434adbdb4127d4b198111934cfbfd2423f1f9e796ddc06ad91

Download Submit
C:\Users\Admin\AppData\Local\Temp\33911166\upstsdssm.pif

MD5
8e699954f6b5d64683412cc560938507

SHA1
8ca6708b0f158eacce3ac28b23c23ed42c168c29

SHA256
c9a2399cc1ce6f71db9da2f16e6c025bf6cb0f4345b427f21449cf927d627a40

SHA512
13035106149c8d336189b4a6bdaf25e10ac0b027baea963b3ec66a815a572426b2e9485258447cf1362802a0f03a2aa257b276057590663161d9d55d5b737b02

Download Submit
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\Local\Temp\tmp2E8F.tmp

MD5
95aceabc58acad5d73372b0966ee1b35

SHA1
2293b7ad4793cf574b1a5220e85f329b5601040a

SHA256
8d9642e1c3cd1e0b5d1763de2fb5e605ba593e5a918b93eec15acbc5dcc48fd4

SHA512
00760dfc9d8caf357f0cee5336e5448a4cca18e32cc63e1a69c16e34fe00ea29acd5b2cf278e86c6f9c3e66a1b176d27ed927361848212e6bf1fade7d3d06e74

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp30A3.tmp

MD5
c4aecdef99eba873119e79616df3f4b0

SHA1
b1b3af52655fb633eed909dfed05b64fbbfac37c

SHA256
24fd0d87bea36a024449a95f808aaa174e4ed9003cb8a427b67c02411b8a2e0b

SHA512
e3f44b07267fccf4f5abd4efe80f2b037ddadc4cb898bdfca9d21ac5d79fcac828950065c2060d3ce125ee971fc3096183afee5287ba9951fbbda7257d8ed8d4

Download Submit
\Users\Admin\AppData\Local\Temp\33911166\upstsdssm.pif

MD5
8e699954f6b5d64683412cc560938507

SHA1
8ca6708b0f158eacce3ac28b23c23ed42c168c29

SHA256
c9a2399cc1ce6f71db9da2f16e6c025bf6cb0f4345b427f21449cf927d627a40

SHA512
13035106149c8d336189b4a6bdaf25e10ac0b027baea963b3ec66a815a572426b2e9485258447cf1362802a0f03a2aa257b276057590663161d9d55d5b737b02

Download Submit
\Users\Admin\AppData\Local\Temp\33911166\upstsdssm.pif

MD5
8e699954f6b5d64683412cc560938507

SHA1
8ca6708b0f158eacce3ac28b23c23ed42c168c29

SHA256
c9a2399cc1ce6f71db9da2f16e6c025bf6cb0f4345b427f21449cf927d627a40

SHA512
13035106149c8d336189b4a6bdaf25e10ac0b027baea963b3ec66a815a572426b2e9485258447cf1362802a0f03a2aa257b276057590663161d9d55d5b737b02

Download Submit
\Users\Admin\AppData\Local\Temp\33911166\upstsdssm.pif

MD5
8e699954f6b5d64683412cc560938507

SHA1
8ca6708b0f158eacce3ac28b23c23ed42c168c29

SHA256
c9a2399cc1ce6f71db9da2f16e6c025bf6cb0f4345b427f21449cf927d627a40

SHA512
13035106149c8d336189b4a6bdaf25e10ac0b027baea963b3ec66a815a572426b2e9485258447cf1362802a0f03a2aa257b276057590663161d9d55d5b737b02

Download Submit
\Users\Admin\AppData\Local\Temp\33911166\upstsdssm.pif

MD5
8e699954f6b5d64683412cc560938507

SHA1
8ca6708b0f158eacce3ac28b23c23ed42c168c29

SHA256
c9a2399cc1ce6f71db9da2f16e6c025bf6cb0f4345b427f21449cf927d627a40

SHA512
13035106149c8d336189b4a6bdaf25e10ac0b027baea963b3ec66a815a572426b2e9485258447cf1362802a0f03a2aa257b276057590663161d9d55d5b737b02

Download Submit
\Users\Admin\AppData\Local\Temp\RegSvcs.exe

MD5
0e06054beb13192588e745ee63a84173

SHA1
30b7d4d1277bafd04a83779fd566a1f834a8d113

SHA256
c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

SHA512
251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

Download Submit
memory/1156-74-0x0000000000000000-mapping.dmp

Download
memory/1244-59-0x0000000000000000-mapping.dmp

Download
memory/1540-54-0x0000000075FC1000-0x0000000075FC3000-memory.dmp

Filesize
8KB

Download
memory/1588-76-0x0000000000000000-mapping.dmp

Download
memory/1652-68-0x000000000038E792-mapping.dmp

Download
memory/1652-67-0x0000000000370000-0x0000000000828000-memory.dmp

Filesize
4.7MB

Download
memory/1652-71-0x0000000000370000-0x0000000000828000-memory.dmp

Filesize
4.7MB

Download
memory/1652-73-0x0000000000B30000-0x0000000000B31000-memory.dmp

Filesize
4KB

Download
memory/1652-66-0x0000000000370000-0x0000000000828000-memory.dmp

Filesize
4.7MB

Download
memory/1652-78-0x0000000002370000-0x0000000002375000-memory.dmp

Filesize
20KB

Download
memory/1652-79-0x00000000023D0000-0x00000000023D6000-memory.dmp

Filesize
24KB

Download
memory/1652-80-0x00000000023E0000-0x00000000023F9000-memory.dmp

Filesize
100KB

Download
memory/1652-81-0x0000000002400000-0x0000000002403000-memory.dmp

Filesize
12KB

Download