nanocore | bbceef2cd8724fc87db474357e3e08d064ae4211ec9d7bc8367720794c867bd6

General

Target

RFQ180584.xlsx
Size

2.5MB
MD5

e39d819b9e782a42fdf513b228b1a9c4
SHA1

df578ae1999faac459fe83efe6ad1f997db519a8
SHA256

bbceef2cd8724fc87db474357e3e08d064ae4211ec9d7bc8367720794c867bd6
SHA512

75c140a55979dcace9f2cc94796e552539400b9e2a02be756f0a19693c8449b54e039c498a7fd5bf13d4a8f593c8e4a57e4cba7be7f7f440ddfdcc4df9f160bd

Score

10^/10

nanocore keylogger spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

79.134.225.50:83

nassiru1166.webhop.me:83

Mutex

ff5d7452-ecaf-474e-b312-1d34eb4979b2

Attributes

activate_away_mode
true
backup_connection_host
nassiru1166.webhop.me
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-01-28T23:55:30.477872536Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
83
default_group
Me Alone
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
ff5d7452-ecaf-474e-b312-1d34eb4979b2
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
79.134.225.50
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
Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 520 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

vbc.exe

pid process

1020 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

520 EQNEDT32.EXE
520 EQNEDT32.EXE
520 EQNEDT32.EXE
520 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Suspicious use of SetThreadContext 1 IoCs

Processes:

vbc.exe

description pid process target process

PID 1020 set thread context of 1088 1020 vbc.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 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

948 schtasks.exe
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE
Launches Equation Editor 1 TTPs 1 IoCs
Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.
exploit

Exploitation for Client Execution
T1203

Processes:

EQNEDT32.EXE

pid process

520 EQNEDT32.EXE

flow	pid	process
7	520	EQNEDT32.EXE

pid	process
1020	vbc.exe

pid	process
520	EQNEDT32.EXE
520	EQNEDT32.EXE
520	EQNEDT32.EXE
520	EQNEDT32.EXE

description	pid	process	target process
PID 1020 set thread context of 1088	1020	vbc.exe	RegSvcs.exe

pid	process
948	schtasks.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

pid	process
520	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

752 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

vbc.exeRegSvcs.exe

pid process

1020 vbc.exe
1020 vbc.exe
1088 RegSvcs.exe
1088 RegSvcs.exe
1088 RegSvcs.exe
1088 RegSvcs.exe
1088 RegSvcs.exe
1088 RegSvcs.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegSvcs.exe

pid process

1088 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exeRegSvcs.exe

description pid process

Token: SeDebugPrivilege 1020 vbc.exe
Token: SeDebugPrivilege 1088 RegSvcs.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

752 EXCEL.EXE
752 EXCEL.EXE
752 EXCEL.EXE

pid	process
752	EXCEL.EXE

pid	process
1020	vbc.exe
1020	vbc.exe
1088	RegSvcs.exe
1088	RegSvcs.exe
1088	RegSvcs.exe
1088	RegSvcs.exe
1088	RegSvcs.exe
1088	RegSvcs.exe

pid	process
1088	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1020	vbc.exe
Token: SeDebugPrivilege	1088	RegSvcs.exe

pid	process
752	EXCEL.EXE
752	EXCEL.EXE
752	EXCEL.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

EQNEDT32.EXEvbc.exe

description	pid	process	target process
PID 520 wrote to memory of 1020	520	EQNEDT32.EXE	vbc.exe
PID 520 wrote to memory of 1020	520	EQNEDT32.EXE	vbc.exe
PID 520 wrote to memory of 1020	520	EQNEDT32.EXE	vbc.exe
PID 520 wrote to memory of 1020	520	EQNEDT32.EXE	vbc.exe
PID 1020 wrote to memory of 948	1020	vbc.exe	schtasks.exe
PID 1020 wrote to memory of 948	1020	vbc.exe	schtasks.exe
PID 1020 wrote to memory of 948	1020	vbc.exe	schtasks.exe
PID 1020 wrote to memory of 948	1020	vbc.exe	schtasks.exe
PID 1020 wrote to memory of 1088	1020	vbc.exe	RegSvcs.exe
PID 1020 wrote to memory of 1088	1020	vbc.exe	RegSvcs.exe
PID 1020 wrote to memory of 1088	1020	vbc.exe	RegSvcs.exe
PID 1020 wrote to memory of 1088	1020	vbc.exe	RegSvcs.exe
PID 1020 wrote to memory of 1088	1020	vbc.exe	RegSvcs.exe
PID 1020 wrote to memory of 1088	1020	vbc.exe	RegSvcs.exe
PID 1020 wrote to memory of 1088	1020	vbc.exe	RegSvcs.exe
PID 1020 wrote to memory of 1088	1020	vbc.exe	RegSvcs.exe
PID 1020 wrote to memory of 1088	1020	vbc.exe	RegSvcs.exe
PID 1020 wrote to memory of 1088	1020	vbc.exe	RegSvcs.exe
PID 1020 wrote to memory of 1088	1020	vbc.exe	RegSvcs.exe
PID 1020 wrote to memory of 1088	1020	vbc.exe	RegSvcs.exe

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\RFQ180584.xlsx
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:752

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:520

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1020

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gLbxBhRIg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5E56.tmp"
3⤵
- Creates scheduled task(s)
PID:948

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:1088

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Scheduled Task

1

T1053

Exploitation for Client Execution

1

T1203

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Scripting

1

T1064

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp5E56.tmp
MD5
897b345bd55ea5d94cb515a779adf795

SHA1
960cb2afc551a810b5f36db747b8e56cc2558f52

SHA256
126740e32066bf2d87d2fd5460a12e0c667e5d6d7fd004fcfa7bb99fc3c369a8

SHA512
8e80e132314ec43bb6a24cd62658a06ff8f29df204d3fd3fa7db5e1d54676ddd33e63300a6c16d65c46b78e6c6053ad084f120e0df60e4c8b82d0ff3561d3492

Download Submit
C:\Users\Public\vbc.exe
MD5
30942ca86a84fe502f5fd7d82ad9fcca

SHA1
dbbef61d1dea3d75d817bde033bbb46547064303

SHA256
7e07bde93d122c059f5b159267f273d05ff8ac8bec540f3ae3bc7c8cd32f1fc7

SHA512
a4e2b5d3f4dd4a6f8b60d86a2d1e851e9daa2b013cbbace6a9eef752a85c945331afc52e178181146dd2ca3291d812846e445a5313ade5bd6206151aa82447cd

Download Submit
C:\Users\Public\vbc.exe
MD5
30942ca86a84fe502f5fd7d82ad9fcca

SHA1
dbbef61d1dea3d75d817bde033bbb46547064303

SHA256
7e07bde93d122c059f5b159267f273d05ff8ac8bec540f3ae3bc7c8cd32f1fc7

SHA512
a4e2b5d3f4dd4a6f8b60d86a2d1e851e9daa2b013cbbace6a9eef752a85c945331afc52e178181146dd2ca3291d812846e445a5313ade5bd6206151aa82447cd

Download Submit
\Users\Public\vbc.exe
MD5
30942ca86a84fe502f5fd7d82ad9fcca

SHA1
dbbef61d1dea3d75d817bde033bbb46547064303

SHA256
7e07bde93d122c059f5b159267f273d05ff8ac8bec540f3ae3bc7c8cd32f1fc7

SHA512
a4e2b5d3f4dd4a6f8b60d86a2d1e851e9daa2b013cbbace6a9eef752a85c945331afc52e178181146dd2ca3291d812846e445a5313ade5bd6206151aa82447cd

Download Submit
\Users\Public\vbc.exe
MD5
30942ca86a84fe502f5fd7d82ad9fcca

SHA1
dbbef61d1dea3d75d817bde033bbb46547064303

SHA256
7e07bde93d122c059f5b159267f273d05ff8ac8bec540f3ae3bc7c8cd32f1fc7

SHA512
a4e2b5d3f4dd4a6f8b60d86a2d1e851e9daa2b013cbbace6a9eef752a85c945331afc52e178181146dd2ca3291d812846e445a5313ade5bd6206151aa82447cd

Download Submit
\Users\Public\vbc.exe
MD5
30942ca86a84fe502f5fd7d82ad9fcca

SHA1
dbbef61d1dea3d75d817bde033bbb46547064303

SHA256
7e07bde93d122c059f5b159267f273d05ff8ac8bec540f3ae3bc7c8cd32f1fc7

SHA512
a4e2b5d3f4dd4a6f8b60d86a2d1e851e9daa2b013cbbace6a9eef752a85c945331afc52e178181146dd2ca3291d812846e445a5313ade5bd6206151aa82447cd

Download Submit
\Users\Public\vbc.exe
MD5
30942ca86a84fe502f5fd7d82ad9fcca

SHA1
dbbef61d1dea3d75d817bde033bbb46547064303

SHA256
7e07bde93d122c059f5b159267f273d05ff8ac8bec540f3ae3bc7c8cd32f1fc7

SHA512
a4e2b5d3f4dd4a6f8b60d86a2d1e851e9daa2b013cbbace6a9eef752a85c945331afc52e178181146dd2ca3291d812846e445a5313ade5bd6206151aa82447cd

Download Submit
memory/520-63-0x00000000750C1000-0x00000000750C3000-memory.dmp

Filesize
8KB

Download
memory/752-76-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/752-61-0x0000000070F01000-0x0000000070F03000-memory.dmp

Filesize
8KB

Download
memory/752-62-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/752-60-0x000000002FDB1000-0x000000002FDB4000-memory.dmp

Filesize
12KB

Download
memory/948-79-0x0000000000000000-mapping.dmp

Download
memory/1020-74-0x000000007EF40000-0x000000007EF41000-memory.dmp

Filesize
4KB

Download
memory/1020-75-0x0000000000730000-0x0000000000739000-memory.dmp

Filesize
36KB

Download
memory/1020-73-0x0000000005020000-0x0000000005021000-memory.dmp

Filesize
4KB

Download
memory/1020-77-0x0000000005410000-0x00000000054E2000-memory.dmp

Filesize
840KB

Download
memory/1020-78-0x00000000079A0000-0x0000000007A2B000-memory.dmp

Filesize
556KB

Download
memory/1020-71-0x0000000000D90000-0x0000000000D91000-memory.dmp

Filesize
4KB

Download
memory/1020-68-0x0000000000000000-mapping.dmp

Download
memory/1088-87-0x00000000004B0000-0x00000000004BD000-memory.dmp

Filesize
52KB

Download
memory/1088-91-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/1088-83-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/1088-85-0x00000000008B0000-0x00000000008B1000-memory.dmp

Filesize
4KB

Download
memory/1088-86-0x00000000004A0000-0x00000000004A5000-memory.dmp

Filesize
20KB

Download
memory/1088-81-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/1088-88-0x00000000004C0000-0x00000000004D5000-memory.dmp

Filesize
84KB

Download
memory/1088-89-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1088-90-0x00000000006E0000-0x00000000006E7000-memory.dmp

Filesize
28KB

Download
memory/1088-82-0x000000000041E792-mapping.dmp

Download
memory/1088-92-0x0000000000750000-0x000000000075D000-memory.dmp

Filesize
52KB

Download
memory/1088-93-0x0000000000760000-0x0000000000769000-memory.dmp

Filesize
36KB

Download
memory/1088-94-0x0000000000780000-0x000000000078F000-memory.dmp

Filesize
60KB

Download
memory/1088-95-0x0000000000890000-0x000000000089A000-memory.dmp

Filesize
40KB

Download
memory/1088-96-0x0000000000930000-0x0000000000949000-memory.dmp

Filesize
100KB

Download
memory/1088-97-0x0000000000960000-0x0000000000963000-memory.dmp

Filesize
12KB

Download
memory/1088-98-0x0000000002240000-0x0000000002269000-memory.dmp

Filesize
164KB

Download
memory/1088-99-0x0000000000970000-0x000000000097F000-memory.dmp

Filesize
60KB

Download
memory/1088-100-0x00000000008B5000-0x00000000008C6000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads