gurcu | 41505242cdbf259aada52b773daeec33d239e4aefd685ba9e406d2cf2f9871a4

Resubmissions

10-04-2024 02:25

240410-cwlljsbh99 10

10-04-2024 02:25

10-04-2024 02:25

10-04-2024 02:25

14-10-2023 04:25

Analysis

max time kernel
297s
max time network
300s
platform
windows11-21h2_x64
resource
win11-20240221-en
resource tags

arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
submitted
10-04-2024 02:25

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General

Target

Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Size

289KB
MD5

88cfc2ccc0575567122d1d233f9eb1c3
SHA1

4be67d0d801197f88c14d62f4495f17e89fc471f
SHA256

41505242cdbf259aada52b773daeec33d239e4aefd685ba9e406d2cf2f9871a4
SHA512

a2dd9ab7a2fe2a6d596c78394f65956f3e8973940229b305e2d763be69ff9f27b1450b5e08ca57cd0886a873fb663daad20ca94d9262a6c80a582dfc5f2e42b7
SSDEEP

6144:uHClm6SWPoK5Z0EwVSmRPQp+L5v9bbSUpi:uHCnZxb8hLLSUpi

Score

10^/10

gurcu collection discovery spyware stealer

Malware Config

Extracted

Family

gurcu

https://api.telegram.org/bot6176004110:AAFKA5be4dMwA848HWxzYIzrzzOGIHMOJGc/sendMessage?chat_id=615133582

Signatures

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

Executes dropped EXE 12 IoCs

pid	Process
4160	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
4196	tor.exe
2252	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
2460	tor.exe
464	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
1780	tor.exe
4276	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
2372	tor.exe
564	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
3840	tor.exe
2896	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
4652	tor.exe

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
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 Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key opened	\REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Key opened	\REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

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
1	ip-api.com

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

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/Job

T1053

pid	Process
4712	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3708	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4160	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Token: SeDebugPrivilege	4160	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Token: SeDebugPrivilege	2252	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Token: SeDebugPrivilege	464	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Token: SeDebugPrivilege	4276	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Token: SeDebugPrivilege	564	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
Token: SeDebugPrivilege	2896	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 676 wrote to memory of 2412	676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	77
PID 676 wrote to memory of 2412	676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	77
PID 2412 wrote to memory of 3312	2412	cmd.exe	79
PID 2412 wrote to memory of 3312	2412	cmd.exe	79
PID 2412 wrote to memory of 3708	2412	cmd.exe	80
PID 2412 wrote to memory of 3708	2412	cmd.exe	80
PID 2412 wrote to memory of 4712	2412	cmd.exe	81
PID 2412 wrote to memory of 4712	2412	cmd.exe	81
PID 2412 wrote to memory of 4160	2412	cmd.exe	82
PID 2412 wrote to memory of 4160	2412	cmd.exe	82
PID 4160 wrote to memory of 2164	4160	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	84
PID 4160 wrote to memory of 2164	4160	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	84
PID 4160 wrote to memory of 4196	4160	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	86
PID 4160 wrote to memory of 4196	4160	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	86
PID 2252 wrote to memory of 2460	2252	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	89
PID 2252 wrote to memory of 2460	2252	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	89
PID 464 wrote to memory of 1780	464	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	95
PID 464 wrote to memory of 1780	464	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	95
PID 4276 wrote to memory of 2372	4276	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	100
PID 4276 wrote to memory of 2372	4276	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	100
PID 564 wrote to memory of 3840	564	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	105
PID 564 wrote to memory of 3840	564	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	105
PID 2896 wrote to memory of 4652	2896	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	110
PID 2896 wrote to memory of 4652	2896	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe	110

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3594324687-1993884830-4019639329-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

C:\Users\Admin\AppData\Local\Temp\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
"C:\Users\Admin\AppData\Local\Temp\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:676
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "Xd2c386a3a6edfe99de10f6ce6b3659c4809a" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe" &&START "" "C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2412
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:3312
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:3708
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "Xd2c386a3a6edfe99de10f6ce6b3659c4809a" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:4712
- - C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
    "C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    - outlook_office_path
    - outlook_win_path
    PID:4160
  - - C:\Windows\System32\tar.exe
      "C:\Windows\System32\tar.exe" -xvzf "C:\Users\Admin\AppData\Local\Temp\tmp3A2A.tmp" -C "C:\Users\Admin\AppData\Local\xdh16uwiax"
      4⤵
      PID:2164
  - - C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
      "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
      4⤵
      Executes dropped EXE
      PID:4196

C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
  "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:2460

C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:464
- C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
  "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:1780

C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4276
- C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
  "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:2372

C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:564
- C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
  "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:3840

C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2896
- C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe
  "C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:4652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Credentials in Registry

T1552.002

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe.log

Filesize
847B

MD5
486ebddc86ea8b3e965d390d22283a23

SHA1
eaffc047f067084867e8575c576a9ec60e094ba8

SHA256
50a57273ecb794e53b0622eb841341e2643c11f53fa47356e6e754ab2268171d

SHA512
0a50ba02250b38355a6f4fb94e40c61258a74031d9aea7cdf675f3e068f39ec0748ecf292aaf2f94b1963b9d66516ee79aa6c552617048e248774af0ff07189d

Download Submit
C:\Users\Admin\AppData\Local\Nvidia\Xd2c386a3a6edfe99de10f6ce6b3659c4809a.exe

Filesize
289KB

MD5
88cfc2ccc0575567122d1d233f9eb1c3

SHA1
4be67d0d801197f88c14d62f4495f17e89fc471f

SHA256
41505242cdbf259aada52b773daeec33d239e4aefd685ba9e406d2cf2f9871a4

SHA512
a2dd9ab7a2fe2a6d596c78394f65956f3e8973940229b305e2d763be69ff9f27b1450b5e08ca57cd0886a873fb663daad20ca94d9262a6c80a582dfc5f2e42b7

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3A2A.tmp

Filesize
13.3MB

MD5
89d2d5811c1aff539bb355f15f3ddad0

SHA1
5bb3577c25b6d323d927200c48cd184a3e27c873

SHA256
b630008f6d3887793d48b87091e56691e292894dd4fa100dc4a418a2f29dcc12

SHA512
39e576124c54143520c5435a2ef9b24506131e13403489c0692f09b89135015d611c4988d4772f8a1e6557fa68b4667d467334461009cee8c2227dfc3e295289

Download Submit
C:\Users\Admin\AppData\Local\xdh16uwiax\data\cached-microdesc-consensus

Filesize
2.7MB

MD5
814f8cba43d923834b0d0027591e52bf

SHA1
2814b4faa0221b252164fbf9586051c07faa050f

SHA256
406d96a4788b07a0c4bda0e289d04472bc92a13f3b5b51e7478d095986735597

SHA512
45d866ec699d731eb7a50669bfa2fb469652b92d92b4546d373777192bff9d2201095ec9e13079ff422b4a7a15175142aa7d2abb57aaf4262b3e837340677069

Download Submit
C:\Users\Admin\AppData\Local\xdh16uwiax\data\cached-microdescs.new

Filesize
9.0MB

MD5
f496323d4969a334404ef1b47ca8c65e

SHA1
5184a33a2316676c6f6d5c50ac17523dc4d97192

SHA256
73232fafd44f47a7657aa6a3da80282129ab144eed97da0ec55dce4f5d567625

SHA512
669424f6334bedded8fb59953e05e9f152623b3815cdc4d9ff2b3ca3b8beab99553d18fd7eb89d84fdba91aeaa30bc28266108d7622319571e3d768320b563b8

Download Submit
C:\Users\Admin\AppData\Local\xdh16uwiax\host\hostname

Filesize
64B

MD5
3a2ec2752eba81519144f7372930e1f9

SHA1
b3bde4557f857ad4d68bfa06c64357af93067e46

SHA256
9543c0bedb29707af54080aabfe4809499e690f85131a92792af9e672a51684b

SHA512
b9cc7eb0a8ef3153dd5bbb670b7e4a2acc1468bde4f17a4639060693e1f8c63b9ef24ed1809f1a9d2a47afa44b81e4abdbc433495f9f46f2c9e84b3374750522

Download Submit
C:\Users\Admin\AppData\Local\xdh16uwiax\port.dat

Filesize
4B

MD5
5101a4796c5127131b2112e2bc6fe02b

SHA1
3ec93aaa96f8d2f137dc5618fa8c8ed9d4705edb

SHA256
d6f9272a493a018a93c71b36fa51b25a971881d9a13b3fe23fdb9309c60a8b4a

SHA512
04bae7d7ca81c83d7c25cc2541f0ade15d394207f1f0c5f99b6ecd9056d0947f9daa606489807d6aedb43d5da9545598090e79a2f61a016bfac5bb4c2267427d

Download Submit
C:\Users\Admin\AppData\Local\xdh16uwiax\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\xdh16uwiax\torrc.txt

Filesize
218B

MD5
cd10d20347c1c1f2827faddcc290e1d3

SHA1
ab1705a453768dca04af22c603350da164db23ec

SHA256
59e629b0d121b8a8b8a9e4d14190d364942ef4377211f3ef524f0f49aeeca5c9

SHA512
d97617ec63ba8a1fe13ee84550817047a1831559986f2c4573e7addc7ce322e33b043940582ee5996c807fdebc15c998668dcc42e5f88b13b3ca0745ec8b9259

Download Submit
memory/464-89-0x00007FFA191F0000-0x00007FFA19CB2000-memory.dmp

Filesize
10.8MB

Download
memory/464-91-0x00007FFA191F0000-0x00007FFA19CB2000-memory.dmp

Filesize
10.8MB

Download
memory/564-105-0x00007FFA191F0000-0x00007FFA19CB2000-memory.dmp

Filesize
10.8MB

Download
memory/564-107-0x00007FFA191F0000-0x00007FFA19CB2000-memory.dmp

Filesize
10.8MB

Download
memory/676-1-0x00007FFA191F0000-0x00007FFA19CB2000-memory.dmp

Filesize
10.8MB

Download
memory/676-0-0x000001A5885C0000-0x000001A58860E000-memory.dmp

Filesize
312KB

Download
memory/676-2-0x000001A5A2C00000-0x000001A5A2C10000-memory.dmp

Filesize
64KB

Download
memory/676-6-0x00007FFA191F0000-0x00007FFA19CB2000-memory.dmp

Filesize
10.8MB

Download
memory/2252-59-0x00007FFA191F0000-0x00007FFA19CB2000-memory.dmp

Filesize
10.8MB

Download
memory/2252-60-0x0000014E2FF30000-0x0000014E2FF40000-memory.dmp

Filesize
64KB

Download
memory/2252-64-0x00007FFA191F0000-0x00007FFA19CB2000-memory.dmp

Filesize
10.8MB

Download
memory/2896-114-0x000001CC7DFA0000-0x000001CC7DFB0000-memory.dmp

Filesize
64KB

Download
memory/2896-113-0x00007FFA191F0000-0x00007FFA19CB2000-memory.dmp

Filesize
10.8MB

Download
memory/2896-116-0x00007FFA191F0000-0x00007FFA19CB2000-memory.dmp

Filesize
10.8MB

Download
memory/4160-12-0x00000155A1920000-0x00000155A1930000-memory.dmp

Filesize
64KB

Download
memory/4160-56-0x00000155A1920000-0x00000155A1930000-memory.dmp

Filesize
64KB

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memory/4160-55-0x00007FFA191F0000-0x00007FFA19CB2000-memory.dmp

Filesize
10.8MB

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memory/4160-11-0x00007FFA191F0000-0x00007FFA19CB2000-memory.dmp

Filesize
10.8MB

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memory/4276-99-0x00007FFA191F0000-0x00007FFA19CB2000-memory.dmp

Filesize
10.8MB

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memory/4276-97-0x00007FFA191F0000-0x00007FFA19CB2000-memory.dmp

Filesize
10.8MB

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