nanocore | 8ad5b88f65afbb0668dc2e35376a586e67aa97d09e94c2a47172c41b271f472f

General

Target

8ad5b88f65afbb0668dc2e35376a586e67aa97d09e94c2a47172c41b271f472f.exe
Size

32KB
MD5

aa21b54e222ad79e8ea469e3e8e8d1a0
SHA1

69743f880cbbbcade254d80f743bb1f0b89d9221
SHA256

8ad5b88f65afbb0668dc2e35376a586e67aa97d09e94c2a47172c41b271f472f
SHA512

3029c801fd059bfa7fbafc1bdc7a9a58fa0ff5f244a7f95225ae171048a1473282eb8ae81a76f32256610f6555178f7b9dc6434deeb9e4a8ad9a1dffc07af0b2
SSDEEP

384:1PmNYo85DCeup3fEhjLuwSm3Tm2eaFO4FzRApkFTBLTsOZwpGd2v99IkuisDNVFz:pA8wlaPBSm3Tw49FzVFE9jGXOjh5bS

Score

10^/10

nanocore xworm discovery evasion keylogger persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

vitalwerks.istmein.de:3150

Mutex

jWXSA287zBis6fzu

Attributes

install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/1340-1-0x0000000000610000-0x000000000061E000-memory.dmp	family_xworm

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore
Nanocore family
nanocore
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	8ad5b88f65afbb0668dc2e35376a586e67aa97d09e94c2a47172c41b271f472f.exe

Executes dropped EXE 1 IoCs

pid	Process
4664	vhrkrl.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\LAN Service = "C:\\Program Files (x86)\\LAN Service\\lansv.exe"	vhrkrl.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

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

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\LAN Service\lansv.exe	vhrkrl.exe
File opened for modification	C:\Program Files (x86)\LAN Service\lansv.exe	vhrkrl.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vhrkrl.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4664	vhrkrl.exe
4664	vhrkrl.exe
4664	vhrkrl.exe
4664	vhrkrl.exe
4664	vhrkrl.exe
4664	vhrkrl.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4664	vhrkrl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1340	8ad5b88f65afbb0668dc2e35376a586e67aa97d09e94c2a47172c41b271f472f.exe
Token: SeDebugPrivilege	4664	vhrkrl.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1340 wrote to memory of 4664	1340	8ad5b88f65afbb0668dc2e35376a586e67aa97d09e94c2a47172c41b271f472f.exe	89
PID 1340 wrote to memory of 4664	1340	8ad5b88f65afbb0668dc2e35376a586e67aa97d09e94c2a47172c41b271f472f.exe	89
PID 1340 wrote to memory of 4664	1340	8ad5b88f65afbb0668dc2e35376a586e67aa97d09e94c2a47172c41b271f472f.exe	89

C:\Users\Admin\AppData\Local\Temp\8ad5b88f65afbb0668dc2e35376a586e67aa97d09e94c2a47172c41b271f472f.exe
"C:\Users\Admin\AppData\Local\Temp\8ad5b88f65afbb0668dc2e35376a586e67aa97d09e94c2a47172c41b271f472f.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1340
- C:\Users\Admin\AppData\Local\Temp\vhrkrl.exe
  "C:\Users\Admin\AppData\Local\Temp\vhrkrl.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:4664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\vhrkrl.exe

Filesize
202KB

MD5
af327cec815eb48cd5f77d700eb618a4

SHA1
7c2f432432fc104e68bc53b685bfe6f9f1819dcc

SHA256
b104e3c35fcea17987af8fc7c9f82f1be3ed5f7b706b114c7b9cf62e4dde0074

SHA512
8d17306c07605c71e0f4cd1e09990f30a135e498d6623d47a847561fcb10079267700c40f88620db1ad9eb02ec62324668798e667fe6bfcfc81a767ba7eba696

Download Submit
memory/1340-0-0x00007FFBFD203000-0x00007FFBFD205000-memory.dmp

Filesize
8KB

Download
memory/1340-1-0x0000000000610000-0x000000000061E000-memory.dmp

Filesize
56KB

Download
memory/1340-2-0x00007FFBFD200000-0x00007FFBFDCC1000-memory.dmp

Filesize
10.8MB

Download
memory/1340-3-0x00007FFBFD203000-0x00007FFBFD205000-memory.dmp

Filesize
8KB

Download
memory/1340-4-0x00007FFBFD200000-0x00007FFBFDCC1000-memory.dmp

Filesize
10.8MB

Download
memory/4664-13-0x0000000074A32000-0x0000000074A33000-memory.dmp

Filesize
4KB

Download
memory/4664-14-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download
memory/4664-15-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download
memory/4664-18-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download
memory/4664-22-0x0000000074A32000-0x0000000074A33000-memory.dmp

Filesize
4KB

Download
memory/4664-23-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download
memory/4664-24-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download
memory/4664-25-0x0000000074A30000-0x0000000074FE1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads