nanocore | 26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7

Analysis

max time kernel
121s
max time network
148s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29-06-2024 09:31

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General

Target

virussign.com_ec03c8da575fa5ee4745506b340968e.exe
Size

296KB
MD5

ec03c8da575fa5ee4745506b340968e6
SHA1

357374aa9b28d6571ebcf3b535b3cd8fe85eebba
SHA256

26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7
SHA512

2d01fa27ef375f77db7e3a896877db902ea52578aaa13aaec2aef3ce8a0199b1de56ca70602bac24f4fd2278ed5835e2c373c0626a05e95929deb93abb94137a
SSDEEP

6144:ou+rdxKERB7nPpuU8Dh1tUS/fqLaiU6xVB3Y8TTp6VmSyp7jk:gdxK8B7nAU87tabNNTd6VnypU

Score

10^/10

nanocore evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

munan.duckdns.org:3637

munabc.duckdns.org:3637

Mutex

4d5a1bc9-ba60-4ed4-85d1-96a1836c92b0

Attributes

activate_away_mode
true
backup_connection_host
munabc.duckdns.org
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2023-09-24T00:04:44.813706136Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
3637
default_group
MUNA
enable_debug_mode
true
gc_threshold
1.048576e+07
keep_alive_timeout
30000
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.048576e+07
mutex
4d5a1bc9-ba60-4ed4-85d1-96a1836c92b0
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
munan.duckdns.org
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
true
set_critical_process
true
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8000

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:

DDfiles.exeDDfiles.exe

pid process

1700 DDfiles.exe
2880 DDfiles.exe
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

RegAsm.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA RegAsm.exe

pid	process
1700	DDfiles.exe
2880	DDfiles.exe

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

Suspicious use of SetThreadContext 3 IoCs

Processes:

virussign.com_ec03c8da575fa5ee4745506b340968e.exeDDfiles.exeDDfiles.exe

description	pid	process	target process
PID 2208 set thread context of 2192	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	RegAsm.exe
PID 1700 set thread context of 324	1700	DDfiles.exe	RegAsm.exe
PID 2880 set thread context of 620	2880	DDfiles.exe	RegAsm.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exeschtasks.exeschtasks.exe

pid process

2588 schtasks.exe
1500 schtasks.exe
1364 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

RegAsm.exe

pid process

2192 RegAsm.exe
2192 RegAsm.exe
2192 RegAsm.exe
2192 RegAsm.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid process

2192 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 2192 RegAsm.exe

pid	process
2588	schtasks.exe
1500	schtasks.exe
1364	schtasks.exe

pid	process
2192	RegAsm.exe
2192	RegAsm.exe
2192	RegAsm.exe
2192	RegAsm.exe

pid	process
2192	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	2192	RegAsm.exe

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

virussign.com_ec03c8da575fa5ee4745506b340968e.execmd.exetaskeng.exeDDfiles.execmd.exe

description	pid	process	target process
PID 2208 wrote to memory of 2192	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	RegAsm.exe
PID 2208 wrote to memory of 2192	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	RegAsm.exe
PID 2208 wrote to memory of 2192	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	RegAsm.exe
PID 2208 wrote to memory of 2192	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	RegAsm.exe
PID 2208 wrote to memory of 2192	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	RegAsm.exe
PID 2208 wrote to memory of 2192	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	RegAsm.exe
PID 2208 wrote to memory of 2192	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	RegAsm.exe
PID 2208 wrote to memory of 2192	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	RegAsm.exe
PID 2208 wrote to memory of 2192	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	RegAsm.exe
PID 2208 wrote to memory of 2192	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	RegAsm.exe
PID 2208 wrote to memory of 2192	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	RegAsm.exe
PID 2208 wrote to memory of 2192	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	RegAsm.exe
PID 2208 wrote to memory of 1728	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	cmd.exe
PID 2208 wrote to memory of 1728	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	cmd.exe
PID 2208 wrote to memory of 1728	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	cmd.exe
PID 2208 wrote to memory of 1728	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	cmd.exe
PID 2208 wrote to memory of 2600	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	cmd.exe
PID 2208 wrote to memory of 2600	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	cmd.exe
PID 2208 wrote to memory of 2600	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	cmd.exe
PID 2208 wrote to memory of 2600	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	cmd.exe
PID 2208 wrote to memory of 2608	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	cmd.exe
PID 2208 wrote to memory of 2608	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	cmd.exe
PID 2208 wrote to memory of 2608	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	cmd.exe
PID 2208 wrote to memory of 2608	2208	virussign.com_ec03c8da575fa5ee4745506b340968e.exe	cmd.exe
PID 2600 wrote to memory of 2588	2600	cmd.exe	schtasks.exe
PID 2600 wrote to memory of 2588	2600	cmd.exe	schtasks.exe
PID 2600 wrote to memory of 2588	2600	cmd.exe	schtasks.exe
PID 2600 wrote to memory of 2588	2600	cmd.exe	schtasks.exe
PID 892 wrote to memory of 1700	892	taskeng.exe	DDfiles.exe
PID 892 wrote to memory of 1700	892	taskeng.exe	DDfiles.exe
PID 892 wrote to memory of 1700	892	taskeng.exe	DDfiles.exe
PID 892 wrote to memory of 1700	892	taskeng.exe	DDfiles.exe
PID 1700 wrote to memory of 324	1700	DDfiles.exe	RegAsm.exe
PID 1700 wrote to memory of 324	1700	DDfiles.exe	RegAsm.exe
PID 1700 wrote to memory of 324	1700	DDfiles.exe	RegAsm.exe
PID 1700 wrote to memory of 324	1700	DDfiles.exe	RegAsm.exe
PID 1700 wrote to memory of 324	1700	DDfiles.exe	RegAsm.exe
PID 1700 wrote to memory of 324	1700	DDfiles.exe	RegAsm.exe
PID 1700 wrote to memory of 324	1700	DDfiles.exe	RegAsm.exe
PID 1700 wrote to memory of 324	1700	DDfiles.exe	RegAsm.exe
PID 1700 wrote to memory of 324	1700	DDfiles.exe	RegAsm.exe
PID 1700 wrote to memory of 324	1700	DDfiles.exe	RegAsm.exe
PID 1700 wrote to memory of 324	1700	DDfiles.exe	RegAsm.exe
PID 1700 wrote to memory of 324	1700	DDfiles.exe	RegAsm.exe
PID 1700 wrote to memory of 2560	1700	DDfiles.exe	cmd.exe
PID 1700 wrote to memory of 2560	1700	DDfiles.exe	cmd.exe
PID 1700 wrote to memory of 2560	1700	DDfiles.exe	cmd.exe
PID 1700 wrote to memory of 2560	1700	DDfiles.exe	cmd.exe
PID 1700 wrote to memory of 2704	1700	DDfiles.exe	cmd.exe
PID 1700 wrote to memory of 2704	1700	DDfiles.exe	cmd.exe
PID 1700 wrote to memory of 2704	1700	DDfiles.exe	cmd.exe
PID 1700 wrote to memory of 2704	1700	DDfiles.exe	cmd.exe
PID 1700 wrote to memory of 2700	1700	DDfiles.exe	cmd.exe
PID 1700 wrote to memory of 2700	1700	DDfiles.exe	cmd.exe
PID 1700 wrote to memory of 2700	1700	DDfiles.exe	cmd.exe
PID 1700 wrote to memory of 2700	1700	DDfiles.exe	cmd.exe
PID 2704 wrote to memory of 1500	2704	cmd.exe	schtasks.exe
PID 2704 wrote to memory of 1500	2704	cmd.exe	schtasks.exe
PID 2704 wrote to memory of 1500	2704	cmd.exe	schtasks.exe
PID 2704 wrote to memory of 1500	2704	cmd.exe	schtasks.exe
PID 892 wrote to memory of 2880	892	taskeng.exe	DDfiles.exe
PID 892 wrote to memory of 2880	892	taskeng.exe	DDfiles.exe
PID 892 wrote to memory of 2880	892	taskeng.exe	DDfiles.exe
PID 892 wrote to memory of 2880	892	taskeng.exe	DDfiles.exe

C:\Users\Admin\AppData\Local\Temp\virussign.com_ec03c8da575fa5ee4745506b340968e.exe
"C:\Users\Admin\AppData\Local\Temp\virussign.com_ec03c8da575fa5ee4745506b340968e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2208

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
- Checks whether UAC is enabled
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:2192

C:\Windows\SysWOW64\cmd.exe
"cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\DDfiles"
2⤵
PID:1728

C:\Windows\SysWOW64\cmd.exe
"cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe'" /f
2⤵
- Suspicious use of WriteProcessMemory
PID:2600

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe'" /f
3⤵
- Scheduled Task/Job: Scheduled Task
PID:2588

C:\Windows\SysWOW64\cmd.exe
"cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\virussign.com_ec03c8da575fa5ee4745506b340968e.exe" "C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe"
2⤵
PID:2608

C:\Windows\system32\taskeng.exe
taskeng.exe {C6464580-D798-41D2-B536-4D1F7C54852A} S-1-5-21-1298544033-3225604241-2703760938-1000:IZKCKOTP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:892

C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe
C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1700

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
3⤵
PID:324

C:\Windows\SysWOW64\cmd.exe
"cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\DDfiles"
3⤵
PID:2560

C:\Windows\SysWOW64\cmd.exe
"cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe'" /f
3⤵
- Suspicious use of WriteProcessMemory
PID:2704

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe'" /f
4⤵
- Scheduled Task/Job: Scheduled Task
PID:1500

C:\Windows\SysWOW64\cmd.exe
"cmd" /c copy "C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe" "C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe"
3⤵
PID:2700

C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe
C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
PID:2880

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
3⤵
PID:620

C:\Windows\SysWOW64\cmd.exe
"cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\DDfiles"
3⤵
PID:2416

C:\Windows\SysWOW64\cmd.exe
"cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe'" /f
3⤵
PID:1788

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe'" /f
4⤵
- Scheduled Task/Job: Scheduled Task
PID:1364

C:\Windows\SysWOW64\cmd.exe
"cmd" /c copy "C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe" "C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe"
3⤵
PID:2196

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads

C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe
Filesize
296KB

MD5
ec03c8da575fa5ee4745506b340968e6

SHA1
357374aa9b28d6571ebcf3b535b3cd8fe85eebba

SHA256
26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7

SHA512
2d01fa27ef375f77db7e3a896877db902ea52578aaa13aaec2aef3ce8a0199b1de56ca70602bac24f4fd2278ed5835e2c373c0626a05e95929deb93abb94137a

Download Submit
memory/324-47-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1700-38-0x0000000000C00000-0x0000000000C50000-memory.dmp

Filesize
320KB

Download
memory/2192-20-0x00000000005D0000-0x00000000005EE000-memory.dmp

Filesize
120KB

Download
memory/2192-24-0x0000000000680000-0x000000000068C000-memory.dmp

Filesize
48KB

Download
memory/2192-9-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/2192-13-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/2192-11-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/2192-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2192-6-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/2192-5-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/2192-3-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/2192-18-0x00000000005A0000-0x00000000005AA000-memory.dmp

Filesize
40KB

Download
memory/2192-19-0x00000000005C0000-0x00000000005CC000-memory.dmp

Filesize
48KB

Download
memory/2192-34-0x0000000002360000-0x0000000002374000-memory.dmp

Filesize
80KB

Download
memory/2192-21-0x0000000000610000-0x000000000061A000-memory.dmp

Filesize
40KB

Download
memory/2192-4-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/2192-25-0x00000000007E0000-0x00000000007FA000-memory.dmp

Filesize
104KB

Download
memory/2192-26-0x0000000000750000-0x000000000075E000-memory.dmp

Filesize
56KB

Download
memory/2192-33-0x0000000004B60000-0x0000000004B8E000-memory.dmp

Filesize
184KB

Download
memory/2192-32-0x0000000000DE0000-0x0000000000DEE000-memory.dmp

Filesize
56KB

Download
memory/2192-31-0x0000000000DD0000-0x0000000000DE4000-memory.dmp

Filesize
80KB

Download
memory/2192-30-0x0000000000DC0000-0x0000000000DD4000-memory.dmp

Filesize
80KB

Download
memory/2192-29-0x0000000000870000-0x000000000087E000-memory.dmp

Filesize
56KB

Download
memory/2192-28-0x0000000000860000-0x000000000086C000-memory.dmp

Filesize
48KB

Download
memory/2192-27-0x0000000000810000-0x0000000000822000-memory.dmp

Filesize
72KB

Download
memory/2208-0-0x000000007466E000-0x000000007466F000-memory.dmp

Filesize
4KB

Download
memory/2208-14-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/2208-2-0x0000000074660000-0x0000000074D4E000-memory.dmp

Filesize
6.9MB

Download
memory/2208-1-0x0000000000330000-0x0000000000380000-memory.dmp

Filesize
320KB

Download
memory/2880-52-0x00000000001A0000-0x00000000001F0000-memory.dmp

Filesize
320KB

Download