nanocore | 69bde687477cbb84509db230498927a8b82f7c3b360269033db1739ede4f3272

Analysis

max time kernel
151s
max time network
155s
platform
windows7_x64
resource
win7-en-20211014
submitted
19-10-2021 14:29

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General

Target

OREL000002931893.JPG.scr
Size

1.1MB
MD5

c6f63f704ac312dd8ae245f27ca9e4cc
SHA1

b8354186bf0150c8c611a76209d0ce4b2c3bfc8d
SHA256

e79ef9ac540330942b1185f71c77d95e6582ea77c4eedc0740a19afeebb59323
SHA512

ac605095a087da90a5b375ce0723482d6704032561d6a2dd04a75e1bd6a4881d5a08244cd3b3b97a3fe433a9d27bed2a723f811bb3fb9a5dfc2b0cddfbd89a3b

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:

kumuchr.pifRegSvcs.exe

pid process

1524 kumuchr.pif
1132 RegSvcs.exe
Loads dropped DLL 5 IoCs

Processes:

OREL000002931893.JPG.scrkumuchr.pif

pid process

1216 OREL000002931893.JPG.scr
1216 OREL000002931893.JPG.scr
1216 OREL000002931893.JPG.scr
1216 OREL000002931893.JPG.scr
1524 kumuchr.pif

pid	process
1524	kumuchr.pif
1132	RegSvcs.exe

pid	process
1216	OREL000002931893.JPG.scr
1216	OREL000002931893.JPG.scr
1216	OREL000002931893.JPG.scr
1216	OREL000002931893.JPG.scr
1524	kumuchr.pif

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

kumuchr.pifRegSvcs.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\AutoUpdate = "c:\\76012661\\Update.vbs"	kumuchr.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\SMTP Service = "C:\\Program Files (x86)\\SMTP Service\\smtpsvc.exe"	RegSvcs.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	kumuchr.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Chrome = "c:\\76012661\\kumuchr.pif c:\\76012661\\rfqmeq.dwp"	kumuchr.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:

kumuchr.pif

description pid process target process

PID 1524 set thread context of 1132 1524 kumuchr.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 1524 set thread context of 1132	1524	kumuchr.pif	RegSvcs.exe

Drops file in Program Files directory 2 IoCs

Processes:

RegSvcs.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\SMTP Service\smtpsvc.exe	RegSvcs.exe
File created	C:\Program Files (x86)\SMTP Service\smtpsvc.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

1820 schtasks.exe
1032 schtasks.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

RegSvcs.exe

pid process

1132 RegSvcs.exe
1132 RegSvcs.exe
1132 RegSvcs.exe
1132 RegSvcs.exe
1132 RegSvcs.exe
1132 RegSvcs.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegSvcs.exe

pid process

1132 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 1132 RegSvcs.exe
Token: SeDebugPrivilege 1132 RegSvcs.exe

pid	process
1820	schtasks.exe
1032	schtasks.exe

pid	process
1132	RegSvcs.exe
1132	RegSvcs.exe
1132	RegSvcs.exe
1132	RegSvcs.exe
1132	RegSvcs.exe
1132	RegSvcs.exe

pid	process
1132	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1132	RegSvcs.exe
Token: SeDebugPrivilege	1132	RegSvcs.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

OREL000002931893.JPG.scrkumuchr.pifRegSvcs.exe

description	pid	process	target process
PID 1216 wrote to memory of 1524	1216	OREL000002931893.JPG.scr	kumuchr.pif
PID 1216 wrote to memory of 1524	1216	OREL000002931893.JPG.scr	kumuchr.pif
PID 1216 wrote to memory of 1524	1216	OREL000002931893.JPG.scr	kumuchr.pif
PID 1216 wrote to memory of 1524	1216	OREL000002931893.JPG.scr	kumuchr.pif
PID 1524 wrote to memory of 1132	1524	kumuchr.pif	RegSvcs.exe
PID 1524 wrote to memory of 1132	1524	kumuchr.pif	RegSvcs.exe
PID 1524 wrote to memory of 1132	1524	kumuchr.pif	RegSvcs.exe
PID 1524 wrote to memory of 1132	1524	kumuchr.pif	RegSvcs.exe
PID 1524 wrote to memory of 1132	1524	kumuchr.pif	RegSvcs.exe
PID 1524 wrote to memory of 1132	1524	kumuchr.pif	RegSvcs.exe
PID 1524 wrote to memory of 1132	1524	kumuchr.pif	RegSvcs.exe
PID 1524 wrote to memory of 1132	1524	kumuchr.pif	RegSvcs.exe
PID 1524 wrote to memory of 1132	1524	kumuchr.pif	RegSvcs.exe
PID 1132 wrote to memory of 1820	1132	RegSvcs.exe	schtasks.exe
PID 1132 wrote to memory of 1820	1132	RegSvcs.exe	schtasks.exe
PID 1132 wrote to memory of 1820	1132	RegSvcs.exe	schtasks.exe
PID 1132 wrote to memory of 1820	1132	RegSvcs.exe	schtasks.exe
PID 1132 wrote to memory of 1032	1132	RegSvcs.exe	schtasks.exe
PID 1132 wrote to memory of 1032	1132	RegSvcs.exe	schtasks.exe
PID 1132 wrote to memory of 1032	1132	RegSvcs.exe	schtasks.exe
PID 1132 wrote to memory of 1032	1132	RegSvcs.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\OREL000002931893.JPG.scr
"C:\Users\Admin\AppData\Local\Temp\OREL000002931893.JPG.scr" /S
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1216
- C:\76012661\kumuchr.pif
  "C:\76012661\kumuchr.pif" rfqmeq.dwp
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1524
- - 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:1132
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "SMTP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4192.tmp"
      4⤵
      Creates scheduled task(s)
      PID:1820
  - - C:\Windows\SysWOW64\schtasks.exe
      "schtasks.exe" /create /f /tn "SMTP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp43C5.tmp"
      4⤵
      Creates scheduled task(s)
      PID:1032

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:\76012661\kumuchr.pif

MD5
8e699954f6b5d64683412cc560938507

SHA1
8ca6708b0f158eacce3ac28b23c23ed42c168c29

SHA256
c9a2399cc1ce6f71db9da2f16e6c025bf6cb0f4345b427f21449cf927d627a40

SHA512
13035106149c8d336189b4a6bdaf25e10ac0b027baea963b3ec66a815a572426b2e9485258447cf1362802a0f03a2aa257b276057590663161d9d55d5b737b02

Download Submit
C:\76012661\qasrk.vap

MD5
98c33e276b6b646e1eee85c6c16031c4

SHA1
76704489cbf4831e40c685f4090801ac2ffe902a

SHA256
ff3f29a2920af715a4a8e6d0c46332254f78ae69d1e89337415a991e68aaa5a8

SHA512
77b49f806b58bf9a19057d5af3cd077ba32dc0432359123fcae50cb163d8871e593f6d03755401484a2a2d299982405bd5bd986c45f95ee3830b16345c606542

Download Submit
C:\76012661\rfqmeq.dwp

MD5
b9c40bda4b3ec23b0de158e2039d81a4

SHA1
7e8f9cdd9d208460e64c28c8e71c73f4f1f8ab62

SHA256
7816ff300a4388347bcfb11de86033c2799277bee4e67dda3ca96a917d40cb07

SHA512
3c06ac59f5c9ebf7b191c23e5df79f21140e6e02e61adf8a2117e6cb81d0586beb198f7e5a407dd4b458cdc23c1588ddc062f9300afc79a2b8bdc4d1587302be

Download Submit
C:\76012661\vhtpmtjvuw.icm

MD5
05f5b4fc4e23a9b7313a83d5f9d10b33

SHA1
fc52296849073f13c61101b193f6bb9846875707

SHA256
cad91c10c2000f35c24f33afc037d6c5a5df32b422413c6b8173e4b9ae0daa00

SHA512
04c772d1e72dd6482e749225dee31dbf177092974adeb5acef850019818455d9543869d4327567a8e9580451dd7d15176d2cca89c3d11e74793d3523850844d6

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\tmp4192.tmp

MD5
95aceabc58acad5d73372b0966ee1b35

SHA1
2293b7ad4793cf574b1a5220e85f329b5601040a

SHA256
8d9642e1c3cd1e0b5d1763de2fb5e605ba593e5a918b93eec15acbc5dcc48fd4

SHA512
00760dfc9d8caf357f0cee5336e5448a4cca18e32cc63e1a69c16e34fe00ea29acd5b2cf278e86c6f9c3e66a1b176d27ed927361848212e6bf1fade7d3d06e74

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp43C5.tmp

MD5
cfae5a3b7d8aa9653fe2512578a0d23a

SHA1
a91a2f8daef114f89038925ada6784646a0a5b12

SHA256
2ab741415f193a2a9134eac48a2310899d18efb5e61c3e81c35140a7efea30fa

SHA512
9dfd7eca6924ae2785ce826a447b6ce6d043c552fbd3b8a804ce6722b07a74900e703dc56cd4443cae9ab9601f21a6068e29771e48497a9ae434096a11814e84

Download Submit
\76012661\kumuchr.pif

MD5
8e699954f6b5d64683412cc560938507

SHA1
8ca6708b0f158eacce3ac28b23c23ed42c168c29

SHA256
c9a2399cc1ce6f71db9da2f16e6c025bf6cb0f4345b427f21449cf927d627a40

SHA512
13035106149c8d336189b4a6bdaf25e10ac0b027baea963b3ec66a815a572426b2e9485258447cf1362802a0f03a2aa257b276057590663161d9d55d5b737b02

Download Submit
\76012661\kumuchr.pif

MD5
8e699954f6b5d64683412cc560938507

SHA1
8ca6708b0f158eacce3ac28b23c23ed42c168c29

SHA256
c9a2399cc1ce6f71db9da2f16e6c025bf6cb0f4345b427f21449cf927d627a40

SHA512
13035106149c8d336189b4a6bdaf25e10ac0b027baea963b3ec66a815a572426b2e9485258447cf1362802a0f03a2aa257b276057590663161d9d55d5b737b02

Download Submit
\76012661\kumuchr.pif

MD5
8e699954f6b5d64683412cc560938507

SHA1
8ca6708b0f158eacce3ac28b23c23ed42c168c29

SHA256
c9a2399cc1ce6f71db9da2f16e6c025bf6cb0f4345b427f21449cf927d627a40

SHA512
13035106149c8d336189b4a6bdaf25e10ac0b027baea963b3ec66a815a572426b2e9485258447cf1362802a0f03a2aa257b276057590663161d9d55d5b737b02

Download Submit
\76012661\kumuchr.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/1032-77-0x0000000000000000-mapping.dmp

Download
memory/1132-68-0x0000000000350000-0x0000000000864000-memory.dmp

Filesize
5.1MB

Download
memory/1132-69-0x000000000036E792-mapping.dmp

Download
memory/1132-72-0x0000000000350000-0x0000000000864000-memory.dmp

Filesize
5.1MB

Download
memory/1132-74-0x0000000005230000-0x0000000005231000-memory.dmp

Filesize
4KB

Download
memory/1132-67-0x0000000000350000-0x0000000000864000-memory.dmp

Filesize
5.1MB

Download
memory/1132-79-0x0000000000980000-0x0000000000985000-memory.dmp

Filesize
20KB

Download
memory/1132-80-0x00000000009A0000-0x00000000009A6000-memory.dmp

Filesize
24KB

Download
memory/1132-81-0x0000000000B30000-0x0000000000B49000-memory.dmp

Filesize
100KB

Download
memory/1132-82-0x0000000000AA0000-0x0000000000AA3000-memory.dmp

Filesize
12KB

Download
memory/1216-55-0x0000000076531000-0x0000000076533000-memory.dmp

Filesize
8KB

Download
memory/1524-60-0x0000000000000000-mapping.dmp

Download
memory/1820-75-0x0000000000000000-mapping.dmp

Download