nanocore | 26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7

Analysis

max time kernel
147s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
19-06-2024 19:49

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General

Target

26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.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

Detects executables packed with SmartAssembly 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3932-1-0x0000000000CB0000-0x0000000000D00000-memory.dmp	INDICATOR_EXE_Packed_SmartAssembly
C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe	INDICATOR_EXE_Packed_SmartAssembly

Executes dropped EXE 2 IoCs

Processes:

DDfiles.exeDDfiles.exe

pid process

4908 DDfiles.exe
3672 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
4908	DDfiles.exe
3672	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:

26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exeDDfiles.exeDDfiles.exe

description	pid	process	target process
PID 3932 set thread context of 3808	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	RegAsm.exe
PID 4908 set thread context of 2340	4908	DDfiles.exe	RegAsm.exe
PID 3672 set thread context of 316	3672	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

5084 schtasks.exe
1336 schtasks.exe
3996 schtasks.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

RegAsm.exe

pid process

3808 RegAsm.exe
3808 RegAsm.exe
3808 RegAsm.exe
3808 RegAsm.exe
3808 RegAsm.exe
3808 RegAsm.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegAsm.exe

pid process

3808 RegAsm.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 3808 RegAsm.exe

pid	process
5084	schtasks.exe
1336	schtasks.exe
3996	schtasks.exe

pid	process
3808	RegAsm.exe
3808	RegAsm.exe
3808	RegAsm.exe
3808	RegAsm.exe
3808	RegAsm.exe
3808	RegAsm.exe

pid	process
3808	RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	3808	RegAsm.exe

Suspicious use of WriteProcessMemory 60 IoCs

Processes:

26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.execmd.exeDDfiles.execmd.exeDDfiles.execmd.exe

description	pid	process	target process
PID 3932 wrote to memory of 3808	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	RegAsm.exe
PID 3932 wrote to memory of 3808	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	RegAsm.exe
PID 3932 wrote to memory of 3808	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	RegAsm.exe
PID 3932 wrote to memory of 3808	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	RegAsm.exe
PID 3932 wrote to memory of 3808	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	RegAsm.exe
PID 3932 wrote to memory of 3808	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	RegAsm.exe
PID 3932 wrote to memory of 3808	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	RegAsm.exe
PID 3932 wrote to memory of 3808	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	RegAsm.exe
PID 3932 wrote to memory of 1136	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	cmd.exe
PID 3932 wrote to memory of 1136	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	cmd.exe
PID 3932 wrote to memory of 1136	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	cmd.exe
PID 3932 wrote to memory of 3828	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	cmd.exe
PID 3932 wrote to memory of 3828	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	cmd.exe
PID 3932 wrote to memory of 3828	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	cmd.exe
PID 3932 wrote to memory of 3992	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	cmd.exe
PID 3932 wrote to memory of 3992	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	cmd.exe
PID 3932 wrote to memory of 3992	3932	26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe	cmd.exe
PID 3828 wrote to memory of 5084	3828	cmd.exe	schtasks.exe
PID 3828 wrote to memory of 5084	3828	cmd.exe	schtasks.exe
PID 3828 wrote to memory of 5084	3828	cmd.exe	schtasks.exe
PID 4908 wrote to memory of 2340	4908	DDfiles.exe	RegAsm.exe
PID 4908 wrote to memory of 2340	4908	DDfiles.exe	RegAsm.exe
PID 4908 wrote to memory of 2340	4908	DDfiles.exe	RegAsm.exe
PID 4908 wrote to memory of 2340	4908	DDfiles.exe	RegAsm.exe
PID 4908 wrote to memory of 2340	4908	DDfiles.exe	RegAsm.exe
PID 4908 wrote to memory of 2340	4908	DDfiles.exe	RegAsm.exe
PID 4908 wrote to memory of 2340	4908	DDfiles.exe	RegAsm.exe
PID 4908 wrote to memory of 2340	4908	DDfiles.exe	RegAsm.exe
PID 4908 wrote to memory of 2036	4908	DDfiles.exe	cmd.exe
PID 4908 wrote to memory of 2036	4908	DDfiles.exe	cmd.exe
PID 4908 wrote to memory of 2036	4908	DDfiles.exe	cmd.exe
PID 4908 wrote to memory of 2192	4908	DDfiles.exe	cmd.exe
PID 4908 wrote to memory of 2192	4908	DDfiles.exe	cmd.exe
PID 4908 wrote to memory of 2192	4908	DDfiles.exe	cmd.exe
PID 4908 wrote to memory of 1052	4908	DDfiles.exe	cmd.exe
PID 4908 wrote to memory of 1052	4908	DDfiles.exe	cmd.exe
PID 4908 wrote to memory of 1052	4908	DDfiles.exe	cmd.exe
PID 2192 wrote to memory of 1336	2192	cmd.exe	schtasks.exe
PID 2192 wrote to memory of 1336	2192	cmd.exe	schtasks.exe
PID 2192 wrote to memory of 1336	2192	cmd.exe	schtasks.exe
PID 3672 wrote to memory of 316	3672	DDfiles.exe	RegAsm.exe
PID 3672 wrote to memory of 316	3672	DDfiles.exe	RegAsm.exe
PID 3672 wrote to memory of 316	3672	DDfiles.exe	RegAsm.exe
PID 3672 wrote to memory of 316	3672	DDfiles.exe	RegAsm.exe
PID 3672 wrote to memory of 316	3672	DDfiles.exe	RegAsm.exe
PID 3672 wrote to memory of 316	3672	DDfiles.exe	RegAsm.exe
PID 3672 wrote to memory of 316	3672	DDfiles.exe	RegAsm.exe
PID 3672 wrote to memory of 316	3672	DDfiles.exe	RegAsm.exe
PID 3672 wrote to memory of 3880	3672	DDfiles.exe	cmd.exe
PID 3672 wrote to memory of 3880	3672	DDfiles.exe	cmd.exe
PID 3672 wrote to memory of 3880	3672	DDfiles.exe	cmd.exe
PID 3672 wrote to memory of 3528	3672	DDfiles.exe	cmd.exe
PID 3672 wrote to memory of 3528	3672	DDfiles.exe	cmd.exe
PID 3672 wrote to memory of 3528	3672	DDfiles.exe	cmd.exe
PID 3672 wrote to memory of 824	3672	DDfiles.exe	cmd.exe
PID 3672 wrote to memory of 824	3672	DDfiles.exe	cmd.exe
PID 3672 wrote to memory of 824	3672	DDfiles.exe	cmd.exe
PID 3528 wrote to memory of 3996	3528	cmd.exe	schtasks.exe
PID 3528 wrote to memory of 3996	3528	cmd.exe	schtasks.exe
PID 3528 wrote to memory of 3996	3528	cmd.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe
"C:\Users\Admin\AppData\Local\Temp\26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3932

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:3808

C:\Windows\SysWOW64\cmd.exe
"cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\DDfiles"
2⤵
PID:1136

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:3828

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:5084

C:\Windows\SysWOW64\cmd.exe
"cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7.exe" "C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe"
2⤵
PID:3992

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3700 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8
1⤵
PID:3964

C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe
C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4908

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
PID:2340

C:\Windows\SysWOW64\cmd.exe
"cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\DDfiles"
2⤵
PID:2036

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:2192

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:1336

C:\Windows\SysWOW64\cmd.exe
"cmd" /c copy "C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe" "C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe"
2⤵
PID:1052

C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe
C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3672

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
PID:316

C:\Windows\SysWOW64\cmd.exe
"cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\DDfiles"
2⤵
PID:3880

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:3528

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:3996

C:\Windows\SysWOW64\cmd.exe
"cmd" /c copy "C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe" "C:\Users\Admin\AppData\Roaming\DDfiles\DDfiles.exe"
2⤵
PID:824

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\DDfiles.exe.log
Filesize
520B

MD5
03febbff58da1d3318c31657d89c8542

SHA1
c9e017bd9d0a4fe533795b227c855935d86c2092

SHA256
5164770a37b199a79ccd23b399bb3309228973d9f74c589bc2623dc613b37ac4

SHA512
3750c372bbca1892e9c1b34681d592c693e725a8b149c3d6938079cd467628cec42c4293b0d886b57a786abf45f5e7229247b3445001774e3e793ff5a3accfa3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\RegAsm.exe.log
Filesize
1KB

MD5
84e77a587d94307c0ac1357eb4d3d46f

SHA1
83cc900f9401f43d181207d64c5adba7a85edc1e

SHA256
e16024b092a026a9dc00df69d4b9bbcab7b2dc178dc5291fc308a1abc9304a99

SHA512
aefb5c62200b3ed97718d20a89990954d4d8acdc0a6a73c5a420f1bba619cb79e70c2cd0a579b9f52dc6b09e1de2cea6cd6cac4376cfee92d94e2c01d310f691

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

MD5
ec03c8da575fa5ee4745506b340968e6

SHA1
357374aa9b28d6571ebcf3b535b3cd8fe85eebba

SHA256
26321ed18abb4d44668e157dcb9a123debe3b7477d95055d20e5f5d997bf60d7

SHA512
2d01fa27ef375f77db7e3a896877db902ea52578aaa13aaec2aef3ce8a0199b1de56ca70602bac24f4fd2278ed5835e2c373c0626a05e95929deb93abb94137a

Download Submit
memory/3808-22-0x0000000006F60000-0x0000000006F7A000-memory.dmp

Filesize
104KB

Download
memory/3808-31-0x0000000007050000-0x0000000007064000-memory.dmp

Filesize
80KB

Download
memory/3808-23-0x0000000006F90000-0x0000000006F9E000-memory.dmp

Filesize
56KB

Download
memory/3808-9-0x0000000005790000-0x0000000005822000-memory.dmp

Filesize
584KB

Download
memory/3808-24-0x0000000006FA0000-0x0000000006FB2000-memory.dmp

Filesize
72KB

Download
memory/3808-11-0x0000000005910000-0x00000000059AC000-memory.dmp

Filesize
624KB

Download
memory/3808-12-0x0000000005850000-0x000000000585A000-memory.dmp

Filesize
40KB

Download
memory/3808-14-0x00000000058E0000-0x00000000058EA000-memory.dmp

Filesize
40KB

Download
memory/3808-16-0x0000000005B20000-0x0000000005B3E000-memory.dmp

Filesize
120KB

Download
memory/3808-15-0x0000000005900000-0x000000000590C000-memory.dmp

Filesize
48KB

Download
memory/3808-17-0x0000000005DF0000-0x0000000005DFA000-memory.dmp

Filesize
40KB

Download
memory/3808-27-0x0000000006FD0000-0x0000000006FE4000-memory.dmp

Filesize
80KB

Download
memory/3808-21-0x0000000005E10000-0x0000000005E1C000-memory.dmp

Filesize
48KB

Download
memory/3808-35-0x0000000075310000-0x0000000075AC0000-memory.dmp

Filesize
7.7MB

Download
memory/3808-5-0x0000000075310000-0x0000000075AC0000-memory.dmp

Filesize
7.7MB

Download
memory/3808-34-0x0000000075310000-0x0000000075AC0000-memory.dmp

Filesize
7.7MB

Download
memory/3808-18-0x0000000075310000-0x0000000075AC0000-memory.dmp

Filesize
7.7MB

Download
memory/3808-26-0x0000000006FC0000-0x0000000006FCE000-memory.dmp

Filesize
56KB

Download
memory/3808-25-0x0000000006FB0000-0x0000000006FBC000-memory.dmp

Filesize
48KB

Download
memory/3808-28-0x0000000006FE0000-0x0000000006FF4000-memory.dmp

Filesize
80KB

Download
memory/3808-29-0x0000000007010000-0x000000000701E000-memory.dmp

Filesize
56KB

Download
memory/3808-30-0x0000000007020000-0x000000000704E000-memory.dmp

Filesize
184KB

Download
memory/3808-4-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/3808-32-0x0000000007230000-0x0000000007296000-memory.dmp

Filesize
408KB

Download
memory/3932-10-0x0000000075310000-0x0000000075AC0000-memory.dmp

Filesize
7.7MB

Download
memory/3932-0-0x000000007531E000-0x000000007531F000-memory.dmp

Filesize
4KB

Download
memory/3932-3-0x0000000075310000-0x0000000075AC0000-memory.dmp

Filesize
7.7MB

Download
memory/3932-2-0x0000000005C50000-0x00000000061F4000-memory.dmp

Filesize
5.6MB

Download
memory/3932-1-0x0000000000CB0000-0x0000000000D00000-memory.dmp

Filesize
320KB

Download