blackguard | 96ce79bac646d87efa144f49cfec13754195d7d47a7e49b24ef471244156c94d

General

Target

Nursuk.exe
Size

7.7MB
MD5

54307c95f310be32416dc11dbbb0242d
SHA1

973c4654fd62f99b69664b91a27ef662eff22530
SHA256

96ce79bac646d87efa144f49cfec13754195d7d47a7e49b24ef471244156c94d
SHA512

13d6ba8722ceb4eaa03a175d318174802be08e5c18422fe88361c27dd62bf05c21004499d3aee2ef81e2e7998aaa74c208aa0aa31158c5690955510ebe48ef4e
SSDEEP

196608:VMy14ZAxwSac2VQUGC9FwUJQX/s1FpdpWgExmM6otTbljN6xxFWFx:VM84ZACSaNQ0UxXUvpGg+mM6otfwFWFx

Score

10^/10

blackguard spyware stealer

Malware Config

Extracted

Family

blackguard

C2

https://api.telegram.org/bot7123530148:AAHl3H5MUg2knkBY6M5FShnUjYK740O7bwk/sendMessage?chat_id=6287236697

Signatures

BlackGuard
Infostealer first seen in Late 2021.
stealer blackguard

Checks computer location settings 2 TTPs 2 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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	Nursuk.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	cheat.exe

Executes dropped EXE 2 IoCs

pid	Process
852	cheat.exe
228	v2.exe

Loads dropped DLL 5 IoCs

pid	Process
228	v2.exe
228	v2.exe
228	v2.exe
228	v2.exe
228	v2.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
18	freegeoip.app
19	freegeoip.app
29	ip-api.com

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	v2.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	v2.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
228	v2.exe
228	v2.exe
228	v2.exe
228	v2.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	228	v2.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1660 wrote to memory of 852	1660	Nursuk.exe	85
PID 1660 wrote to memory of 852	1660	Nursuk.exe	85
PID 1660 wrote to memory of 852	1660	Nursuk.exe	85
PID 852 wrote to memory of 228	852	cheat.exe	87
PID 852 wrote to memory of 228	852	cheat.exe	87
PID 852 wrote to memory of 228	852	cheat.exe	87

C:\Users\Admin\AppData\Local\Temp\Nursuk.exe
"C:\Users\Admin\AppData\Local\Temp\Nursuk.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1660
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\cheat.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\cheat.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:852
- - C:\Users\Admin\AppData\Local\Temp\v2.exe
    "C:\Users\Admin\AppData\Local\Temp\v2.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:228

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

2

T1552

Credentials In Files

2

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

2

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Newtonsoft.Json.dll

Filesize
571KB

MD5
169b6d383b7c650ab3ae2129397a6cf3

SHA1
fcaef7defb04301fd55fb1421bb15ef96d7040d6

SHA256
b896083feb2bdedc1568b62805dbd354c55e57f2d2469a52aec6c98f4ec2dedf

SHA512
7a7a7bdb508b8bf177249251c83b65a2ef4a5d8b29397cab130cb8444b23888678673a9a2e4b1c74cc095b358f923b9e7e5a91bfa8c240412d95765851f1dd87

Download Submit
C:\Users\Admin\AppData\Local\Temp\RarSFX0\cheat.exe

Filesize
7.7MB

MD5
707d7f538927a48fac91bde6c5e5565a

SHA1
dc3fdc3887b85a4560ca26bf51c0169eb96550a0

SHA256
c4a8ed8d0b6b79a58615cb44615d964e18e4f771763a212822ada1d871832f8b

SHA512
929e3d231f16d08bfdf910fefc1fc23bfa6209691b71dde54002c831b9cce0d1b540c8625011030774c1217c2377e558d424f67f22c16c62c0004bc2e903ddc3

Download Submit
C:\Users\Admin\AppData\Local\Temp\SQLite.Interop.dll

Filesize
1.3MB

MD5
0a1e95b0b1535203a1b8479dff2c03ff

SHA1
20c4b4406e8a3b1b35ca739ed59aa07ba867043d

SHA256
788d748b4d35dfd091626529457d91e9ebc8225746211086b14fb4a25785a51e

SHA512
854abcca8d807a98a9ad0ca5d2e55716c3ce26fae7ee4642796baf415c3cfad522b658963eafe504ecaed6c2ecdcdf332c9b01e43dfa342fcc5ca0fbedfe600e

Download Submit
C:\Users\Admin\AppData\Local\Temp\System.Data.SQLite.dll

Filesize
410KB

MD5
056d3fcaf3b1d32ff25f513621e2a372

SHA1
851740bca46bab71d0b1d47e47f3eb8358cbee03

SHA256
66b64362664030bff1596cda2ec5bd5df48cc7c8313c32f771db4aa30a3f86f9

SHA512
ce47c581538f48a46d70279a62c702195beacbfafb48a5a862b3922625fe56f6887d1679c6d9366f946d3d2124cb31c2a3eacbbd14d601ea56e66575cdf46180

Download Submit
C:\Users\Admin\AppData\Local\Temp\v2.exe

Filesize
271KB

MD5
93ca6bf598e9a28449163dc6f33a6c75

SHA1
fde44e21274da79601e71d7961bd6e0332cb0c89

SHA256
48aad11fc8e533a9f56c04d46001c648f8c215ce62c72ed8c448e94f5dd42c53

SHA512
d795b551012e4d1b8d8d9a96670785b2092ebbdc760eb2b0a085376b1b787a547862f04f3fca49a8f3936a70fccd5493e774a8c414a0d66362c9f773c46b3497

Download Submit
C:\Users\Admin\AppData\Roaming\ByuByHNHTRwZuuGAWKBMOT.Admin\Browsers\Firefox\Bookmarks.txt

Filesize
105B

MD5
2e9d094dda5cdc3ce6519f75943a4ff4

SHA1
5d989b4ac8b699781681fe75ed9ef98191a5096c

SHA256
c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

SHA512
d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

Download Submit
C:\Users\Admin\AppData\Roaming\ByuByHNHTRwZuuGAWKBMOT.Admin\Process.txt

Filesize
751B

MD5
314650b8467b4e91265e340381568b88

SHA1
d1e5c09299b6f7b5134d4e12376edd4c2b512b01

SHA256
0f56a6e056a58b088847b4bb0c085e55afc4bebc3458089fce31759b4020dfd4

SHA512
bcfa5f6475cef2c0dfe015588ec5741c181bb39760afcc78bfa6370d1b5504155f1fa2b921e70e1c2b23f6b3a87c3c4b72777d4b00a85d775ed1b28f51118499

Download Submit
C:\Users\Admin\AppData\Roaming\ByuByHNHTRwZuuGAWKBMOT.Admin\Process.txt

Filesize
1KB

MD5
9585346108dd2f2063e718cbef938108

SHA1
5092eb9892da88c809144f776a9d8013a06f2875

SHA256
c562a136575b9b653d5210bdd48d1f6615fb98f260251aced52265e1282d4e70

SHA512
a4ad71abff5d8878ec9a7f446bd3901483eab766da9f34cf779cc3d37b67f66aa90df9def1a80e49fbfa8b654d8a6cb15411c0738d3bc25d8f6e4e734393b935

Download Submit
memory/228-101-0x0000000006AD0000-0x0000000006B38000-memory.dmp

Filesize
416KB

Download
memory/228-109-0x0000000006EE0000-0x0000000006F01000-memory.dmp

Filesize
132KB

Download
memory/228-97-0x0000000006930000-0x0000000006952000-memory.dmp

Filesize
136KB

Download
memory/228-95-0x0000000005C90000-0x0000000005D22000-memory.dmp

Filesize
584KB

Download
memory/228-50-0x0000000006050000-0x00000000060E2000-memory.dmp

Filesize
584KB

Download
memory/228-102-0x0000000006B40000-0x0000000006E94000-memory.dmp

Filesize
3.3MB

Download
memory/228-103-0x0000000006A70000-0x0000000006ABC000-memory.dmp

Filesize
304KB

Download
memory/228-44-0x0000000005960000-0x0000000005970000-memory.dmp

Filesize
64KB

Download
memory/228-108-0x0000000006F40000-0x0000000006F7C000-memory.dmp

Filesize
240KB

Download
memory/228-96-0x0000000006430000-0x0000000006480000-memory.dmp

Filesize
320KB

Download
memory/228-114-0x0000000007EF0000-0x00000000080B2000-memory.dmp

Filesize
1.8MB

Download
memory/228-118-0x0000000008670000-0x0000000008C14000-memory.dmp

Filesize
5.6MB

Download
memory/228-42-0x0000000000DB0000-0x0000000000DFA000-memory.dmp

Filesize
296KB

Download
memory/228-43-0x0000000073210000-0x00000000739C0000-memory.dmp

Filesize
7.7MB

Download
memory/228-205-0x0000000009340000-0x00000000093A6000-memory.dmp

Filesize
408KB

Download
memory/228-206-0x00000000093B0000-0x0000000009426000-memory.dmp

Filesize
472KB

Download
memory/228-207-0x00000000081C0000-0x00000000081DE000-memory.dmp

Filesize
120KB

Download
memory/228-210-0x0000000073210000-0x00000000739C0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads