nanocore | f7b6fe9f584bc1662bf71f4baa1a242edfe7d823eb1538f24065fd9094e9b02f

Analysis

max time kernel
149s
max time network
179s
platform
windows7_x64
resource
win7-en-20210920
submitted
25-10-2021 01:34

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General

Target

KERSEL00000209419.scr
Size

976KB
MD5

f9ddb4afd10f811f82d3efc7335a3899
SHA1

7132e4e6d07df37905950ef8d92f38b12ae4832e
SHA256

f7b6fe9f584bc1662bf71f4baa1a242edfe7d823eb1538f24065fd9094e9b02f
SHA512

a172061299d4b7ec2d54e32379f4e2156e0176964282b481acfd354993bddca979e5a98335b9905572de4c4ac8b5ab56b3743daff690f89933b9248a4eeec2ab

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:

oamjouuda.pifRegSvcs.exe

pid process

1540 oamjouuda.pif
1348 RegSvcs.exe
Loads dropped DLL 5 IoCs

Processes:

KERSEL00000209419.scroamjouuda.pif

pid process

548 KERSEL00000209419.scr
548 KERSEL00000209419.scr
548 KERSEL00000209419.scr
548 KERSEL00000209419.scr
1540 oamjouuda.pif

pid	process
1540	oamjouuda.pif
1348	RegSvcs.exe

pid	process
548	KERSEL00000209419.scr
548	KERSEL00000209419.scr
548	KERSEL00000209419.scr
548	KERSEL00000209419.scr
1540	oamjouuda.pif

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

oamjouuda.pifRegSvcs.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Chrome = "C:\\Users\\Admin\\AppData\\Local\\Temp\\29006555\\OAMJOU~1.PIF C:\\Users\\Admin\\AppData\\Local\\Temp\\29006555\\QGXXHB~1.FAK"	oamjouuda.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\AutoUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\29006555\\Update.vbs"	oamjouuda.pif
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	oamjouuda.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:

oamjouuda.pif

description pid process target process

PID 1540 set thread context of 1348 1540 oamjouuda.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 1540 set thread context of 1348	1540	oamjouuda.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

1408 schtasks.exe
1828 schtasks.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

RegSvcs.exe

pid process

1348 RegSvcs.exe
1348 RegSvcs.exe
1348 RegSvcs.exe
1348 RegSvcs.exe
1348 RegSvcs.exe
1348 RegSvcs.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegSvcs.exe

pid process

1348 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 1348 RegSvcs.exe
Token: SeDebugPrivilege 1348 RegSvcs.exe

pid	process
1408	schtasks.exe
1828	schtasks.exe

pid	process
1348	RegSvcs.exe
1348	RegSvcs.exe
1348	RegSvcs.exe
1348	RegSvcs.exe
1348	RegSvcs.exe
1348	RegSvcs.exe

pid	process
1348	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1348	RegSvcs.exe
Token: SeDebugPrivilege	1348	RegSvcs.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

KERSEL00000209419.scroamjouuda.pifRegSvcs.exe

description	pid	process	target process
PID 548 wrote to memory of 1540	548	KERSEL00000209419.scr	oamjouuda.pif
PID 548 wrote to memory of 1540	548	KERSEL00000209419.scr	oamjouuda.pif
PID 548 wrote to memory of 1540	548	KERSEL00000209419.scr	oamjouuda.pif
PID 548 wrote to memory of 1540	548	KERSEL00000209419.scr	oamjouuda.pif
PID 1540 wrote to memory of 1348	1540	oamjouuda.pif	RegSvcs.exe
PID 1540 wrote to memory of 1348	1540	oamjouuda.pif	RegSvcs.exe
PID 1540 wrote to memory of 1348	1540	oamjouuda.pif	RegSvcs.exe
PID 1540 wrote to memory of 1348	1540	oamjouuda.pif	RegSvcs.exe
PID 1540 wrote to memory of 1348	1540	oamjouuda.pif	RegSvcs.exe
PID 1540 wrote to memory of 1348	1540	oamjouuda.pif	RegSvcs.exe
PID 1540 wrote to memory of 1348	1540	oamjouuda.pif	RegSvcs.exe
PID 1540 wrote to memory of 1348	1540	oamjouuda.pif	RegSvcs.exe
PID 1540 wrote to memory of 1348	1540	oamjouuda.pif	RegSvcs.exe
PID 1348 wrote to memory of 1828	1348	RegSvcs.exe	schtasks.exe
PID 1348 wrote to memory of 1828	1348	RegSvcs.exe	schtasks.exe
PID 1348 wrote to memory of 1828	1348	RegSvcs.exe	schtasks.exe
PID 1348 wrote to memory of 1828	1348	RegSvcs.exe	schtasks.exe
PID 1348 wrote to memory of 1408	1348	RegSvcs.exe	schtasks.exe
PID 1348 wrote to memory of 1408	1348	RegSvcs.exe	schtasks.exe
PID 1348 wrote to memory of 1408	1348	RegSvcs.exe	schtasks.exe
PID 1348 wrote to memory of 1408	1348	RegSvcs.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\KERSEL00000209419.scr
"C:\Users\Admin\AppData\Local\Temp\KERSEL00000209419.scr" /S
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:548

C:\Users\Admin\AppData\Local\Temp\29006555\oamjouuda.pif
"C:\Users\Admin\AppData\Local\Temp\29006555\oamjouuda.pif" qgxxhbeeur.fak
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1540

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:1348

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "UDP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp6B31.tmp"
4⤵
- Creates scheduled task(s)
PID:1828

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "UDP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp6EFA.tmp"
4⤵
- Creates scheduled task(s)
PID:1408

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\29006555\oamjouuda.pif
MD5
e1f85da023a9f5784e38a37c16c777e6

SHA1
6623fe6bb1903311cfa96ebdcd25822bc4f221ef

SHA256
f4ca36a5e6c02acd6897ffdcaed69f1767ff05a99b2042b218171886b88af162

SHA512
28e0a435eb27ca8653a767383a8b16d13f9c0f37e93a4dc814da02ad21c2e85f2efd9df80915437a4768dbe5b107741ba9451754f479340dfc6db2e7b15d55ba

Download Submit
C:\Users\Admin\AppData\Local\Temp\29006555\ofpfg.oig
MD5
9623d2ac778e54910fa04dee5c900f69

SHA1
4a320ad98158212744e5fcc80d083e650dee7579

SHA256
a334e4f7292f1c408dfdd959d84742ad687f3d3f40e1353fa11d573df3376cad

SHA512
fc3a1bbd1ded2d0598b0533cd7c1a999ee190dbf4266a8c35ae51854d6dd24c0bc196facd75cd45851b84e278a39a4e942be178080223c8ca23d7671429a9e58

Download Submit
C:\Users\Admin\AppData\Local\Temp\29006555\qgxxhbeeur.fak
MD5
e97cf2e2c846376c9c4ab3fdfac89f95

SHA1
656e71c64683f48225b8cdcd99cc0f6f3211c779

SHA256
d881f2b9431e91a0189876c53aaa7123ca9ad9edf2f0342b5224a2411f7d83c1

SHA512
b9cf1bbacf21b71d4a9d7e96c61d76fd0384d56a74e0778e0967e7fa571581f6c9d732b6e49f197d76129eb79504b0950bc40f1131677b61b6825bb785d37ec7

Download Submit
C:\Users\Admin\AppData\Local\Temp\29006555\rvuvtxmop.icm
MD5
c8fdfb013b07f4473850c70b5c1bcb4a

SHA1
4a0ff8d1700da6bfa49c607f593b376749120178

SHA256
7e2c6b66af2bd95c733339ca37adc4245e5356ea3aad98597a6c762e81ee3f81

SHA512
adfc149c9dc84e1cef29dda6308b4f03118a7b36a4d67b638ed36eb453269396ab0978de6068e689f5af6335362cb9dc98b3aa2daf96fb3cbdc70dd8288f7cc6

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\tmp6B31.tmp
MD5
95aceabc58acad5d73372b0966ee1b35

SHA1
2293b7ad4793cf574b1a5220e85f329b5601040a

SHA256
8d9642e1c3cd1e0b5d1763de2fb5e605ba593e5a918b93eec15acbc5dcc48fd4

SHA512
00760dfc9d8caf357f0cee5336e5448a4cca18e32cc63e1a69c16e34fe00ea29acd5b2cf278e86c6f9c3e66a1b176d27ed927361848212e6bf1fade7d3d06e74

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp6EFA.tmp
MD5
c4aecdef99eba873119e79616df3f4b0

SHA1
b1b3af52655fb633eed909dfed05b64fbbfac37c

SHA256
24fd0d87bea36a024449a95f808aaa174e4ed9003cb8a427b67c02411b8a2e0b

SHA512
e3f44b07267fccf4f5abd4efe80f2b037ddadc4cb898bdfca9d21ac5d79fcac828950065c2060d3ce125ee971fc3096183afee5287ba9951fbbda7257d8ed8d4

Download Submit
\Users\Admin\AppData\Local\Temp\29006555\oamjouuda.pif
MD5
e1f85da023a9f5784e38a37c16c777e6

SHA1
6623fe6bb1903311cfa96ebdcd25822bc4f221ef

SHA256
f4ca36a5e6c02acd6897ffdcaed69f1767ff05a99b2042b218171886b88af162

SHA512
28e0a435eb27ca8653a767383a8b16d13f9c0f37e93a4dc814da02ad21c2e85f2efd9df80915437a4768dbe5b107741ba9451754f479340dfc6db2e7b15d55ba

Download Submit
\Users\Admin\AppData\Local\Temp\29006555\oamjouuda.pif
MD5
e1f85da023a9f5784e38a37c16c777e6

SHA1
6623fe6bb1903311cfa96ebdcd25822bc4f221ef

SHA256
f4ca36a5e6c02acd6897ffdcaed69f1767ff05a99b2042b218171886b88af162

SHA512
28e0a435eb27ca8653a767383a8b16d13f9c0f37e93a4dc814da02ad21c2e85f2efd9df80915437a4768dbe5b107741ba9451754f479340dfc6db2e7b15d55ba

Download Submit
\Users\Admin\AppData\Local\Temp\29006555\oamjouuda.pif
MD5
e1f85da023a9f5784e38a37c16c777e6

SHA1
6623fe6bb1903311cfa96ebdcd25822bc4f221ef

SHA256
f4ca36a5e6c02acd6897ffdcaed69f1767ff05a99b2042b218171886b88af162

SHA512
28e0a435eb27ca8653a767383a8b16d13f9c0f37e93a4dc814da02ad21c2e85f2efd9df80915437a4768dbe5b107741ba9451754f479340dfc6db2e7b15d55ba

Download Submit
\Users\Admin\AppData\Local\Temp\29006555\oamjouuda.pif
MD5
e1f85da023a9f5784e38a37c16c777e6

SHA1
6623fe6bb1903311cfa96ebdcd25822bc4f221ef

SHA256
f4ca36a5e6c02acd6897ffdcaed69f1767ff05a99b2042b218171886b88af162

SHA512
28e0a435eb27ca8653a767383a8b16d13f9c0f37e93a4dc814da02ad21c2e85f2efd9df80915437a4768dbe5b107741ba9451754f479340dfc6db2e7b15d55ba

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

SHA1
30b7d4d1277bafd04a83779fd566a1f834a8d113

SHA256
c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

SHA512
251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

Download Submit
memory/548-54-0x0000000075331000-0x0000000075333000-memory.dmp

Filesize
8KB

Download
memory/1348-74-0x00000000050F0000-0x00000000050F1000-memory.dmp

Filesize
4KB

Download
memory/1348-67-0x0000000000300000-0x00000000007A5000-memory.dmp

Filesize
4.6MB

Download
memory/1348-71-0x0000000000300000-0x00000000007A5000-memory.dmp

Filesize
4.6MB

Download
memory/1348-68-0x000000000031E792-mapping.dmp

Download
memory/1348-66-0x0000000000300000-0x00000000007A5000-memory.dmp

Filesize
4.6MB

Download
memory/1348-78-0x0000000000B40000-0x0000000000B45000-memory.dmp

Filesize
20KB

Download
memory/1348-79-0x0000000000B50000-0x0000000000B56000-memory.dmp

Filesize
24KB

Download
memory/1348-80-0x00000000022C0000-0x00000000022D9000-memory.dmp

Filesize
100KB

Download
memory/1348-81-0x00000000023F0000-0x00000000023F3000-memory.dmp

Filesize
12KB

Download
memory/1408-76-0x0000000000000000-mapping.dmp

Download
memory/1540-59-0x0000000000000000-mapping.dmp

Download
memory/1828-73-0x0000000000000000-mapping.dmp

Download