nanocore | dc1cb9432a84c26de67dd7a2d9ce4d0ebf582af3862b2825f71b8e6fd12c0790

General

Target

81a6ff876eed37e77d4424b85f28969c.exe
Size

981KB
MD5

81a6ff876eed37e77d4424b85f28969c
SHA1

955a9fed685bd82126dabf386b83edd3571fcc21
SHA256

dc1cb9432a84c26de67dd7a2d9ce4d0ebf582af3862b2825f71b8e6fd12c0790
SHA512

8cd949770f7e0a2af4d437a57f0b7faff67c7ace6ef03bcac13b7fcd0ae77bea47b3b78f288e06ab3b07f97389416a4f53bb8575cfb6cb2d110e31fd8d64ee03

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

79.134.225.87:1144

nazareen12.ddns.net:1144

Mutex

ba6cce4a-8474-40f3-8a06-f54f0d8bad9e

Attributes

activate_away_mode
true
backup_connection_host
nazareen12.ddns.net
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-09-21T16:18:52.563488536Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
1144
default_group
New Start
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
ba6cce4a-8474-40f3-8a06-f54f0d8bad9e
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
79.134.225.87
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
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:

chromee.exeInstallUtil.exe

pid process

3956 chromee.exe
1580 InstallUtil.exe

pid	process
3956	chromee.exe
1580	InstallUtil.exe

Drops startup file 3 IoCs

Processes:

81a6ff876eed37e77d4424b85f28969c.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chromee.lnk	81a6ff876eed37e77d4424b85f28969c.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chromee.exe	81a6ff876eed37e77d4424b85f28969c.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chromee.exe	81a6ff876eed37e77d4424b85f28969c.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

InstallUtil.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SMTP Manager = "C:\\Program Files (x86)\\SMTP Manager\\smtpmgr.exe"	InstallUtil.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

InstallUtil.exe

description ioc process

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

Processes:

chromee.exe

description pid process target process

PID 3956 set thread context of 1580 3956 chromee.exe InstallUtil.exe

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

description	pid	process	target process
PID 3956 set thread context of 1580	3956	chromee.exe	InstallUtil.exe

Drops file in Program Files directory 2 IoCs

Processes:

InstallUtil.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\SMTP Manager\smtpmgr.exe	InstallUtil.exe
File created	C:\Program Files (x86)\SMTP Manager\smtpmgr.exe	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

81a6ff876eed37e77d4424b85f28969c.exechromee.exeInstallUtil.exe

pid	process
728	81a6ff876eed37e77d4424b85f28969c.exe
728	81a6ff876eed37e77d4424b85f28969c.exe
728	81a6ff876eed37e77d4424b85f28969c.exe
728	81a6ff876eed37e77d4424b85f28969c.exe
728	81a6ff876eed37e77d4424b85f28969c.exe
728	81a6ff876eed37e77d4424b85f28969c.exe
728	81a6ff876eed37e77d4424b85f28969c.exe
728	81a6ff876eed37e77d4424b85f28969c.exe
728	81a6ff876eed37e77d4424b85f28969c.exe
728	81a6ff876eed37e77d4424b85f28969c.exe
728	81a6ff876eed37e77d4424b85f28969c.exe
728	81a6ff876eed37e77d4424b85f28969c.exe
728	81a6ff876eed37e77d4424b85f28969c.exe
728	81a6ff876eed37e77d4424b85f28969c.exe
728	81a6ff876eed37e77d4424b85f28969c.exe
728	81a6ff876eed37e77d4424b85f28969c.exe
728	81a6ff876eed37e77d4424b85f28969c.exe
3956	chromee.exe
3956	chromee.exe
1580	InstallUtil.exe
1580	InstallUtil.exe
1580	InstallUtil.exe
1580	InstallUtil.exe
1580	InstallUtil.exe
1580	InstallUtil.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

InstallUtil.exe

pid process

1580 InstallUtil.exe

pid	process
1580	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

81a6ff876eed37e77d4424b85f28969c.exechromee.exeInstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	728	81a6ff876eed37e77d4424b85f28969c.exe
Token: SeDebugPrivilege	3956	chromee.exe
Token: SeDebugPrivilege	1580	InstallUtil.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

81a6ff876eed37e77d4424b85f28969c.exechromee.exe

description	pid	process	target process
PID 728 wrote to memory of 3956	728	81a6ff876eed37e77d4424b85f28969c.exe	chromee.exe
PID 728 wrote to memory of 3956	728	81a6ff876eed37e77d4424b85f28969c.exe	chromee.exe
PID 728 wrote to memory of 3956	728	81a6ff876eed37e77d4424b85f28969c.exe	chromee.exe
PID 3956 wrote to memory of 1580	3956	chromee.exe	InstallUtil.exe
PID 3956 wrote to memory of 1580	3956	chromee.exe	InstallUtil.exe
PID 3956 wrote to memory of 1580	3956	chromee.exe	InstallUtil.exe
PID 3956 wrote to memory of 1580	3956	chromee.exe	InstallUtil.exe
PID 3956 wrote to memory of 1580	3956	chromee.exe	InstallUtil.exe
PID 3956 wrote to memory of 1580	3956	chromee.exe	InstallUtil.exe
PID 3956 wrote to memory of 1580	3956	chromee.exe	InstallUtil.exe
PID 3956 wrote to memory of 1580	3956	chromee.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\81a6ff876eed37e77d4424b85f28969c.exe
"C:\Users\Admin\AppData\Local\Temp\81a6ff876eed37e77d4424b85f28969c.exe"
1⤵
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:728

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chromee.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chromee.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3956

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
"C:\Users\Admin\AppData\Local\Temp\InstallUtil.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
PID:1580

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chromee.exe
MD5
81a6ff876eed37e77d4424b85f28969c

SHA1
955a9fed685bd82126dabf386b83edd3571fcc21

SHA256
dc1cb9432a84c26de67dd7a2d9ce4d0ebf582af3862b2825f71b8e6fd12c0790

SHA512
8cd949770f7e0a2af4d437a57f0b7faff67c7ace6ef03bcac13b7fcd0ae77bea47b3b78f288e06ab3b07f97389416a4f53bb8575cfb6cb2d110e31fd8d64ee03

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\chromee.exe
MD5
81a6ff876eed37e77d4424b85f28969c

SHA1
955a9fed685bd82126dabf386b83edd3571fcc21

SHA256
dc1cb9432a84c26de67dd7a2d9ce4d0ebf582af3862b2825f71b8e6fd12c0790

SHA512
8cd949770f7e0a2af4d437a57f0b7faff67c7ace6ef03bcac13b7fcd0ae77bea47b3b78f288e06ab3b07f97389416a4f53bb8575cfb6cb2d110e31fd8d64ee03

Download Submit
memory/728-7-0x0000000004C70000-0x0000000004C71000-memory.dmp

Filesize
4KB

Download
memory/728-5-0x0000000004CB0000-0x0000000004CB1000-memory.dmp

Filesize
4KB

Download
memory/728-8-0x0000000007640000-0x0000000007641000-memory.dmp

Filesize
4KB

Download
memory/728-3-0x0000000000340000-0x0000000000341000-memory.dmp

Filesize
4KB

Download
memory/728-2-0x00000000730E0000-0x00000000737CE000-memory.dmp

Filesize
6.9MB

Download
memory/728-6-0x0000000004BA0000-0x0000000004BBE000-memory.dmp

Filesize
120KB

Download
memory/1580-34-0x00000000054E0000-0x00000000054F5000-memory.dmp

Filesize
84KB

Download
memory/1580-32-0x0000000005280000-0x0000000005285000-memory.dmp

Filesize
20KB

Download
memory/1580-21-0x0000000000400000-0x000000000047E000-memory.dmp

Filesize
504KB

Download
memory/1580-22-0x000000000041E792-mapping.dmp

Download
memory/1580-40-0x0000000006140000-0x0000000006169000-memory.dmp

Filesize
164KB

Download
memory/1580-41-0x0000000005FD0000-0x0000000005FDF000-memory.dmp

Filesize
60KB

Download
memory/1580-36-0x0000000005760000-0x000000000576F000-memory.dmp

Filesize
60KB

Download
memory/1580-28-0x00000000057A0000-0x00000000057A1000-memory.dmp

Filesize
4KB

Download
memory/1580-31-0x0000000005200000-0x0000000005201000-memory.dmp

Filesize
4KB

Download
memory/1580-39-0x0000000005FC0000-0x0000000005FC3000-memory.dmp

Filesize
12KB

Download
memory/1580-33-0x0000000005320000-0x000000000532D000-memory.dmp

Filesize
52KB

Download
memory/1580-38-0x0000000005FA0000-0x0000000005FB9000-memory.dmp

Filesize
100KB

Download
memory/1580-35-0x0000000005690000-0x0000000005696000-memory.dmp

Filesize
24KB

Download
memory/1580-25-0x00000000730E0000-0x00000000737CE000-memory.dmp

Filesize
6.9MB

Download
memory/1580-37-0x0000000005790000-0x000000000579A000-memory.dmp

Filesize
40KB

Download
memory/3956-12-0x00000000730E0000-0x00000000737CE000-memory.dmp

Filesize
6.9MB

Download
memory/3956-20-0x0000000003420000-0x0000000003421000-memory.dmp

Filesize
4KB

Download
memory/3956-19-0x0000000003400000-0x000000000340B000-memory.dmp

Filesize
44KB

Download
memory/3956-9-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads