gurcu | 27ba6d686db735916061498a56b3a43e4791ee455fabf4caed05db1929f28e6b

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
06-12-2024 13:03

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General

Target

f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
Size

490KB
MD5

a338043c6b5260df6b7ce4c4ec3d1b80
SHA1

087a787a34ee05478bfa07b50fd39c8367b0a157
SHA256

f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50
SHA512

c81b2f1aac6d249d43b485e8e536c22a8f44da09e31f118f9ddfd0f1ef6d1eba4b67e96d087b2148f45dc93e0de5ba0178c422088e110a40544a7b3b2ff4fccf
SSDEEP

6144:/6ho3IhHN5ya1R64TxT8jWHgf8YJkVHC++VeQPBZnq0LZYSwFxQx9tw39b5wGuJB:irhtHxpmWHgf8Y6/Qp1nLiDKIwf

Score

10^/10

gurcu collection discovery phishing spyware stealer

Malware Config

Extracted

Family

gurcu

https://api.telegram.org/bot6104192483:AAFCcnr4FR2XCO83zUSAWWZ9J3qw4tRYQoI/sendMessage?chat_id=2076277850

Signatures

Gurcu family
gurcu
Gurcu, WhiteSnake
Gurcu aka WhiteSnake is a malware stealer written in C#.
stealer gurcu
A potential corporate email address has been identified in the URL: MJAHk_Admin@GUMLNLFE_report.wsr
phishing

Checks computer location settings 2 TTPs 5 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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe

Executes dropped EXE 8 IoCs

pid	Process
2848	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
2552	tor.exe
4864	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
2976	tor.exe
2136	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
2524	tor.exe
4788	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
1792	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 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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.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
64	ip-api.com

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

System Information Discovery
T1082

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3648	cmd.exe
3904	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3904	PING.EXE

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2496	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2848	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
2848	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
4864	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1216	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
Token: SeDebugPrivilege	2848	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
Token: SeDebugPrivilege	4864	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
Token: SeDebugPrivilege	2136	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
Token: SeDebugPrivilege	4788	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1216 wrote to memory of 3648	1216	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe	84
PID 1216 wrote to memory of 3648	1216	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe	84
PID 3648 wrote to memory of 3200	3648	cmd.exe	86
PID 3648 wrote to memory of 3200	3648	cmd.exe	86
PID 3648 wrote to memory of 3904	3648	cmd.exe	87
PID 3648 wrote to memory of 3904	3648	cmd.exe	87
PID 3648 wrote to memory of 2496	3648	cmd.exe	88
PID 3648 wrote to memory of 2496	3648	cmd.exe	88
PID 3648 wrote to memory of 2848	3648	cmd.exe	89
PID 3648 wrote to memory of 2848	3648	cmd.exe	89
PID 2848 wrote to memory of 2904	2848	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe	98
PID 2848 wrote to memory of 2904	2848	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe	98
PID 2848 wrote to memory of 2552	2848	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe	101
PID 2848 wrote to memory of 2552	2848	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe	101
PID 4864 wrote to memory of 2976	4864	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe	107
PID 4864 wrote to memory of 2976	4864	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe	107
PID 2136 wrote to memory of 2524	2136	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe	119
PID 2136 wrote to memory of 2524	2136	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe	119
PID 4788 wrote to memory of 1792	4788	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe	125
PID 4788 wrote to memory of 1792	4788	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe	125

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-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe

C:\Users\Admin\AppData\Local\Temp\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
"C:\Users\Admin\AppData\Local\Temp\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1216
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\EsetSecurity\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe" &&START "" "C:\Users\Admin\AppData\Local\EsetSecurity\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe"
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3648
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:3200
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:3904
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\EsetSecurity\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe" /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2496
- - C:\Users\Admin\AppData\Local\EsetSecurity\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
    "C:\Users\Admin\AppData\Local\EsetSecurity\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe"
    3⤵
    - Checks computer location settings
    - 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:2848
  - - C:\Windows\System32\tar.exe
      "C:\Windows\System32\tar.exe" -xvzf "C:\Users\Admin\AppData\Local\Temp\tmpB352.tmp" -C "C:\Users\Admin\AppData\Local\y5aox5pi99"
      4⤵
      PID:2904
  - - C:\Users\Admin\AppData\Local\y5aox5pi99\tor\tor.exe
      "C:\Users\Admin\AppData\Local\y5aox5pi99\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\y5aox5pi99\torrc.txt"
      4⤵
      Executes dropped EXE
      PID:2552

C:\Users\Admin\AppData\Local\EsetSecurity\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
C:\Users\Admin\AppData\Local\EsetSecurity\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4864
- C:\Users\Admin\AppData\Local\y5aox5pi99\tor\tor.exe
  "C:\Users\Admin\AppData\Local\y5aox5pi99\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\y5aox5pi99\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:2976

C:\Users\Admin\AppData\Local\EsetSecurity\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
C:\Users\Admin\AppData\Local\EsetSecurity\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Users\Admin\AppData\Local\y5aox5pi99\tor\tor.exe
  "C:\Users\Admin\AppData\Local\y5aox5pi99\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\y5aox5pi99\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:2524

C:\Users\Admin\AppData\Local\EsetSecurity\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
C:\Users\Admin\AppData\Local\EsetSecurity\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4788
- C:\Users\Admin\AppData\Local\y5aox5pi99\tor\tor.exe
  "C:\Users\Admin\AppData\Local\y5aox5pi99\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\y5aox5pi99\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:1792

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

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

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

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\EsetSecurity\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe

Filesize
490KB

MD5
a338043c6b5260df6b7ce4c4ec3d1b80

SHA1
087a787a34ee05478bfa07b50fd39c8367b0a157

SHA256
f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50

SHA512
c81b2f1aac6d249d43b485e8e536c22a8f44da09e31f118f9ddfd0f1ef6d1eba4b67e96d087b2148f45dc93e0de5ba0178c422088e110a40544a7b3b2ff4fccf

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe.log

Filesize
847B

MD5
3308a84a40841fab7dfec198b3c31af7

SHA1
4e7ab6336c0538be5dd7da529c0265b3b6523083

SHA256
169bc31a8d1666535977ca170d246a463e6531bb21faab6c48cb4269d9d60b2e

SHA512
97521d5fb94efdc836ea2723098a1f26a7589a76af51358eee17292d29c9325baf53ad6b4496c5ca3e208d1c9b9ad6797a370e2ae378072fc68f5d6e8b73b198

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB352.tmp

Filesize
13.3MB

MD5
89d2d5811c1aff539bb355f15f3ddad0

SHA1
5bb3577c25b6d323d927200c48cd184a3e27c873

SHA256
b630008f6d3887793d48b87091e56691e292894dd4fa100dc4a418a2f29dcc12

SHA512
39e576124c54143520c5435a2ef9b24506131e13403489c0692f09b89135015d611c4988d4772f8a1e6557fa68b4667d467334461009cee8c2227dfc3e295289

Download Submit
C:\Users\Admin\AppData\Local\y5aox5pi99\data\cached-microdesc-consensus.tmp

Filesize
2.8MB

MD5
60b015590834133e034982d1b0a50a11

SHA1
87be108c43f309b8996f79d9f765118c0243df35

SHA256
96e7246185578f37210e1cf9b0f08cdb736f9f92db5d7c78d63a55a8e0139edc

SHA512
8d38f5199585b2f646e08038534aab372da817ec850d25147269ec8270f62a355a8d35da0d3ee478ca87cb23e97d8f35a3e36d7a39c96fdfb631a3ccaf3b5a25

Download Submit
C:\Users\Admin\AppData\Local\y5aox5pi99\data\cached-microdescs.new

Filesize
7.9MB

MD5
b6356bc8a6660b24a204ab5f98a9ac82

SHA1
7af7ae8176dcac760a604ca2f793ecb2196db9a4

SHA256
1dce196c0567d7d6e35982da8005e8aa4952474059cde98b0ef4830083f68e9c

SHA512
eb93dba2d3b1838d9da899e1428f5b3a3af000411745d6283d96c768a45862458551b520bd795fbf5e853a9945ea7b9c069d0c86d2044e457fa98cc9bd5fbb38

Download Submit
C:\Users\Admin\AppData\Local\y5aox5pi99\host\hostname

Filesize
64B

MD5
4732bbcec36c9bfa0f98c73e7591ec05

SHA1
5f1ef39c74fb83723b15bd75fb883ceecca1c522

SHA256
ee01e565c6572e80767c1357877cf3a5ed1b18c87afa4eedb5322c4ece1fe5fa

SHA512
3334c1785ebbb515124ff02318af764bd3fc5a7216b6f00450adb699618cf1daf0d01fb9e37f9a0096aea9ad84e22f89a9d24cefc9a37be71794b20828be7170

Download Submit
C:\Users\Admin\AppData\Local\y5aox5pi99\port.dat

Filesize
4B

MD5
d3e0f226df6865b28fb677548370f467

SHA1
dad97feeb29459f49b8b8172b8ff8ed728054fa7

SHA256
a473459996b96ce015e4f44fc3f3ab3d8033d0514fd5504be6e9d71ef995a765

SHA512
b2f99f2a43e87a3080d13dd0ac0ddae9fa59cd911a9112b45d8787698e6e95a30d89705a92bb362a27cd0a0a0f50afa275101b37af2ecf63773b6dab618b7a71

Download Submit
C:\Users\Admin\AppData\Local\y5aox5pi99\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\y5aox5pi99\torrc.txt

Filesize
218B

MD5
4a0cfe2e5cc289e13e84e3cc3dcdff5f

SHA1
46fe377d4c974dd628554bacaa1c1df1900dc06b

SHA256
092fc1c0bf07544f66656f4694b3ebc93a8ad14f3499bf5db67b4970fd0c7200

SHA512
130cef0d6b60f2921ec60f4d825d52d08a8db5dffc480094921e1cfbc77a781e871cb0851854bf9937d2d5d24dab223901ef857267aa3643a4b510847673f680

Download Submit
memory/1216-6-0x00007FF909AE0000-0x00007FF90A5A1000-memory.dmp

Filesize
10.8MB

Download
memory/1216-0-0x00007FF909AE3000-0x00007FF909AE5000-memory.dmp

Filesize
8KB

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memory/1216-4-0x00007FF909AE0000-0x00007FF90A5A1000-memory.dmp

Filesize
10.8MB

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memory/1216-1-0x0000022A8D410000-0x0000022A8D490000-memory.dmp

Filesize
512KB

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memory/2848-11-0x00007FF909400000-0x00007FF909EC1000-memory.dmp

Filesize
10.8MB

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memory/2848-39-0x00007FF909400000-0x00007FF909EC1000-memory.dmp

Filesize
10.8MB

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