nanocore | dc632387d0761b880e99669d0351799c9bed07e9bb3f806ad51fec32bfd0bb8c

Analysis

max time kernel
147s
max time network
138s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
28-03-2023 17:52

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General

Target

8903abf7f27153d44bc49dd7875c0eb6.exe
Size

1.1MB
MD5

8903abf7f27153d44bc49dd7875c0eb6
SHA1

67919e9c5babca471da12c881809c9d105670fba
SHA256

dc632387d0761b880e99669d0351799c9bed07e9bb3f806ad51fec32bfd0bb8c
SHA512

d0b7902a79332bcfa64e57fc4bce1c3e76250d78bc05297a528d415470e720e1646824e8fc177547b61840fe0a60496841e71fe6ed744b81c576c2af6bf35b95
SSDEEP

24576:lTbBv5rUaUUUUUJUUUUUUJDPpvm6to+dLn1CHm8WZQ6k+5zUMeC:PBLUUUUUJUUUUUUFPpv2+9n1ymdqwFUQ

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

december2n.duckdns.org:40111

december2nd.ddns.net:40111

Mutex

32ca6e6e-2fe0-4ef5-a3ea-5de451e80042

Attributes

activate_away_mode
false
backup_connection_host
december2nd.ddns.net
backup_dns_server
buffer_size
65538
build_time
2022-11-26T05:13:34.059050336Z
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
40111
default_group
mama
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
32ca6e6e-2fe0-4ef5-a3ea-5de451e80042
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
december2n.duckdns.org
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:

uflbpckkn.pifRegSvcs.exe

pid process

824 uflbpckkn.pif
1876 RegSvcs.exe
Loads dropped DLL 2 IoCs

Processes:

wscript.exeuflbpckkn.pif

pid process

1268 wscript.exe
824 uflbpckkn.pif

pid	process
824	uflbpckkn.pif
1876	RegSvcs.exe

pid	process
1268	wscript.exe
824	uflbpckkn.pif

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

uflbpckkn.pifRegSvcs.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Chrome = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ulfi\\UFLBPC~1.PIF C:\\Users\\Admin\\AppData\\Local\\Temp\\ulfi\\acac.icm"	uflbpckkn.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\AutoUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ulfi\\Update.vbs"	uflbpckkn.pif
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ISS Monitor = "C:\\Program Files (x86)\\ISS Monitor\\issmon.exe"	RegSvcs.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	uflbpckkn.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:

uflbpckkn.pif

description pid process target process

PID 824 set thread context of 1876 824 uflbpckkn.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 824 set thread context of 1876	824	uflbpckkn.pif	RegSvcs.exe

Drops file in Program Files directory 2 IoCs

Processes:

RegSvcs.exe

description	ioc	process
File created	C:\Program Files (x86)\ISS Monitor\issmon.exe	RegSvcs.exe
File opened for modification	C:\Program Files (x86)\ISS Monitor\issmon.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

1760 schtasks.exe
1532 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegSvcs.exe

pid process

1876 RegSvcs.exe
1876 RegSvcs.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

RegSvcs.exe

pid process

1876 RegSvcs.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RegSvcs.exe

description pid process

Token: SeDebugPrivilege 1876 RegSvcs.exe
Token: SeDebugPrivilege 1876 RegSvcs.exe

pid	process
1760	schtasks.exe
1532	schtasks.exe

pid	process
1876	RegSvcs.exe
1876	RegSvcs.exe

pid	process
1876	RegSvcs.exe

description	pid	process
Token: SeDebugPrivilege	1876	RegSvcs.exe
Token: SeDebugPrivilege	1876	RegSvcs.exe

Suspicious use of WriteProcessMemory 28 IoCs

Processes:

8903abf7f27153d44bc49dd7875c0eb6.exewscript.exeuflbpckkn.pifRegSvcs.exe

description	pid	process	target process
PID 1748 wrote to memory of 1268	1748	8903abf7f27153d44bc49dd7875c0eb6.exe	wscript.exe
PID 1748 wrote to memory of 1268	1748	8903abf7f27153d44bc49dd7875c0eb6.exe	wscript.exe
PID 1748 wrote to memory of 1268	1748	8903abf7f27153d44bc49dd7875c0eb6.exe	wscript.exe
PID 1748 wrote to memory of 1268	1748	8903abf7f27153d44bc49dd7875c0eb6.exe	wscript.exe
PID 1268 wrote to memory of 824	1268	wscript.exe	uflbpckkn.pif
PID 1268 wrote to memory of 824	1268	wscript.exe	uflbpckkn.pif
PID 1268 wrote to memory of 824	1268	wscript.exe	uflbpckkn.pif
PID 1268 wrote to memory of 824	1268	wscript.exe	uflbpckkn.pif
PID 1268 wrote to memory of 824	1268	wscript.exe	uflbpckkn.pif
PID 1268 wrote to memory of 824	1268	wscript.exe	uflbpckkn.pif
PID 1268 wrote to memory of 824	1268	wscript.exe	uflbpckkn.pif
PID 824 wrote to memory of 1876	824	uflbpckkn.pif	RegSvcs.exe
PID 824 wrote to memory of 1876	824	uflbpckkn.pif	RegSvcs.exe
PID 824 wrote to memory of 1876	824	uflbpckkn.pif	RegSvcs.exe
PID 824 wrote to memory of 1876	824	uflbpckkn.pif	RegSvcs.exe
PID 824 wrote to memory of 1876	824	uflbpckkn.pif	RegSvcs.exe
PID 824 wrote to memory of 1876	824	uflbpckkn.pif	RegSvcs.exe
PID 824 wrote to memory of 1876	824	uflbpckkn.pif	RegSvcs.exe
PID 824 wrote to memory of 1876	824	uflbpckkn.pif	RegSvcs.exe
PID 824 wrote to memory of 1876	824	uflbpckkn.pif	RegSvcs.exe
PID 1876 wrote to memory of 1760	1876	RegSvcs.exe	schtasks.exe
PID 1876 wrote to memory of 1760	1876	RegSvcs.exe	schtasks.exe
PID 1876 wrote to memory of 1760	1876	RegSvcs.exe	schtasks.exe
PID 1876 wrote to memory of 1760	1876	RegSvcs.exe	schtasks.exe
PID 1876 wrote to memory of 1532	1876	RegSvcs.exe	schtasks.exe
PID 1876 wrote to memory of 1532	1876	RegSvcs.exe	schtasks.exe
PID 1876 wrote to memory of 1532	1876	RegSvcs.exe	schtasks.exe
PID 1876 wrote to memory of 1532	1876	RegSvcs.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\8903abf7f27153d44bc49dd7875c0eb6.exe
"C:\Users\Admin\AppData\Local\Temp\8903abf7f27153d44bc49dd7875c0eb6.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1748

C:\Windows\SysWOW64\wscript.exe
"C:\Windows\System32\wscript.exe" Update-ea.i.vbe
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1268

C:\Users\Admin\AppData\Local\Temp\ulfi\uflbpckkn.pif
"C:\Users\Admin\AppData\Local\Temp\ulfi\uflbpckkn.pif" acac.icm
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:824

C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
"C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"
4⤵
- 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:1876

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "ISS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4599.tmp"
5⤵
- Creates scheduled task(s)
PID:1760

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "ISS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp475E.tmp"
5⤵
- Creates scheduled task(s)
PID:1532

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
Filesize
44KB

MD5
0e06054beb13192588e745ee63a84173

SHA1
30b7d4d1277bafd04a83779fd566a1f834a8d113

SHA256
c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

SHA512
251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

Download Submit
C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
Filesize
44KB

MD5
0e06054beb13192588e745ee63a84173

SHA1
30b7d4d1277bafd04a83779fd566a1f834a8d113

SHA256
c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

SHA512
251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp4599.tmp
Filesize
1KB

MD5
95aceabc58acad5d73372b0966ee1b35

SHA1
2293b7ad4793cf574b1a5220e85f329b5601040a

SHA256
8d9642e1c3cd1e0b5d1763de2fb5e605ba593e5a918b93eec15acbc5dcc48fd4

SHA512
00760dfc9d8caf357f0cee5336e5448a4cca18e32cc63e1a69c16e34fe00ea29acd5b2cf278e86c6f9c3e66a1b176d27ed927361848212e6bf1fade7d3d06e74

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp475E.tmp
Filesize
1KB

MD5
97ca1345e92062cecc79ad320a0e89b1

SHA1
9e696a4df86c685befe01d00a16611331ed7e763

SHA256
937a440251a10c5a8921104975e5b7f166a34be5e48aa5c4ad344f8beadd1ad2

SHA512
b7cce6586e4db4e387343c01977b0768fca8c4842098f1caf7e4240fa89273279b1ade5ed25aaf108102dd06c0ee945a24cf4786eb24de34520b4c11c2e82214

Download Submit
C:\Users\Admin\AppData\Local\Temp\ulfi\acac.icm
Filesize
95.9MB

MD5
e8a33aaf79c3f76c630c61c6f5f0b31a

SHA1
993bdb82effe95425f90e641109423bdac297877

SHA256
8cca194384c2997d1de62de975ba07081fabf02d0b52667c5eaa3f28894e5dcd

SHA512
05c4473f62d417686b5f954639c5d7bfe49fbaab3c63188f3085353f3ae40fc0e34dab6ad815d32af535800eaabab74a0c401acc96c345bf5eea74261731f648

Download Submit
C:\Users\Admin\AppData\Local\Temp\ulfi\fvwo.khu
Filesize
397KB

MD5
47a3760694424f080062061971c9e2ae

SHA1
107b8682b9322ee4886ade154c88c3cfebd24ae9

SHA256
2a454fbe70bedf8e9df6bb9172fd14b941b675a3465a80bc9b0fe20b499ef4ad

SHA512
31d92fc367c857fa71598fbb3346f292da574855d013a7cab0b5715eac80a7e2b37d863c92dcdb3b1ef34fc6e3529630460c9b23ba22e3d41e4553c5f3a3e655

Download Submit
C:\Users\Admin\AppData\Local\Temp\ulfi\lxskid.exe
Filesize
36KB

MD5
2435592ed0b9f8d194c83959963dc3f7

SHA1
38f7a2ae638a16ba3795a62f14e8dbfafd3773d9

SHA256
2810ae0246ac63c47e79965e2873e9e5680e86cadfad49d786a6d9487959503a

SHA512
e9fa279c187ddc879df2adb45ffb4d57528737921a6dd6c8b071e5cfa0049987b6a31b05b110c4b33c6123c8a6114d7e6348ffa80f020124f46235a0336f8ef9

Download Submit
C:\Users\Admin\AppData\Local\Temp\ulfi\uflbpckkn.pif
Filesize
1.1MB

MD5
a2e8bd62287be6d626673abaf4a08ee1

SHA1
356414442272116ead8fd4cbf846e3764cbb7b43

SHA256
cd6fa898bfad0a9f9571b7529c3dfbcbefc2e7bd74cb534920d744a1e7b1c280

SHA512
98effa2b34f97ebfa0bd5178868774b9a6b435179bd6a2bca89081121c17b1a073b46bbd983cec0a1dad5f9491a2707649b0c3082d1b012fff4a78fee94262a1

Download Submit
C:\Users\Admin\AppData\Local\Temp\ulfi\uflbpckkn.pif
Filesize
1.1MB

MD5
a2e8bd62287be6d626673abaf4a08ee1

SHA1
356414442272116ead8fd4cbf846e3764cbb7b43

SHA256
cd6fa898bfad0a9f9571b7529c3dfbcbefc2e7bd74cb534920d744a1e7b1c280

SHA512
98effa2b34f97ebfa0bd5178868774b9a6b435179bd6a2bca89081121c17b1a073b46bbd983cec0a1dad5f9491a2707649b0c3082d1b012fff4a78fee94262a1

Download Submit
C:\Users\Admin\AppData\Local\temp\ulfi\Update-ea.i.vbe
Filesize
90KB

MD5
3318cb58d4af65922182b7ed858c6ade

SHA1
c088cc1d16ee3193e37024469b62dd3aaaf9e6f3

SHA256
9343cabbc583472118ef788156f745aba257309f5374c54ec52e4ef04048174a

SHA512
00a4505c4d35524a4b2c0a133aabfd30009e0bb3715774dc04c31122bce83d530026178d136e8fdb2903d891e603ae9e74727b3c9441cbe9bd63785f91a9f24f

Download Submit
\Users\Admin\AppData\Local\Temp\RegSvcs.exe
Filesize
44KB

MD5
0e06054beb13192588e745ee63a84173

SHA1
30b7d4d1277bafd04a83779fd566a1f834a8d113

SHA256
c5d6d56ded55fbd6c150ee3a0eb2e5671cae83106be2be4d70ce50aa50bab768

SHA512
251a112f3f037e62ff67a467389e47a56afb344bc942b17efa9bd2970494718b26bbee9adc3ac35f93ee4d2114aa426b6d0ea4bafad294b6c118a15f1977c215

Download Submit
\Users\Admin\AppData\Local\Temp\ulfi\uflbpckkn.pif
Filesize
1.1MB

MD5
a2e8bd62287be6d626673abaf4a08ee1

SHA1
356414442272116ead8fd4cbf846e3764cbb7b43

SHA256
cd6fa898bfad0a9f9571b7529c3dfbcbefc2e7bd74cb534920d744a1e7b1c280

SHA512
98effa2b34f97ebfa0bd5178868774b9a6b435179bd6a2bca89081121c17b1a073b46bbd983cec0a1dad5f9491a2707649b0c3082d1b012fff4a78fee94262a1

Download Submit
memory/1876-127-0x00000000001F0000-0x00000000008BE000-memory.dmp

Filesize
6.8MB

Download
memory/1876-129-0x00000000001F0000-0x00000000008BE000-memory.dmp

Filesize
6.8MB

Download
memory/1876-124-0x00000000001F0000-0x00000000008BE000-memory.dmp

Filesize
6.8MB

Download
memory/1876-131-0x00000000001F0000-0x000000000022A000-memory.dmp

Filesize
232KB

Download
memory/1876-132-0x00000000027A0000-0x00000000027E0000-memory.dmp

Filesize
256KB

Download
memory/1876-122-0x00000000001F0000-0x00000000008BE000-memory.dmp

Filesize
6.8MB

Download
memory/1876-123-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1876-140-0x0000000001120000-0x000000000112A000-memory.dmp

Filesize
40KB

Download
memory/1876-141-0x0000000001170000-0x000000000117C000-memory.dmp

Filesize
48KB

Download
memory/1876-142-0x0000000001210000-0x000000000122E000-memory.dmp

Filesize
120KB

Download
memory/1876-143-0x0000000001270000-0x000000000127A000-memory.dmp

Filesize
40KB

Download
memory/1876-144-0x00000000027A0000-0x00000000027E0000-memory.dmp

Filesize
256KB

Download