gurcu | f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50

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 spyware stealer

Malware Config

Extracted

Family

gurcu

C2

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

Signatures

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

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-1-5-21-2548970870-3691742953-3895070203-1000\Control Panel\International\Geo\Nation	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe

Executes dropped EXE 1 IoCs

pid	Process
112	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.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
T1081

Accesses Microsoft Outlook profiles 1 TTPs 2 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
Key opened	\REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe

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

T1053

pid	Process
348	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2288	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
112	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	372	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
Token: SeDebugPrivilege	112	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 372 wrote to memory of 1552	372	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe	84
PID 372 wrote to memory of 1552	372	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe	84
PID 1552 wrote to memory of 4700	1552	cmd.exe	86
PID 1552 wrote to memory of 4700	1552	cmd.exe	86
PID 1552 wrote to memory of 2288	1552	cmd.exe	87
PID 1552 wrote to memory of 2288	1552	cmd.exe	87
PID 1552 wrote to memory of 348	1552	cmd.exe	88
PID 1552 wrote to memory of 348	1552	cmd.exe	88
PID 1552 wrote to memory of 112	1552	cmd.exe	89
PID 1552 wrote to memory of 112	1552	cmd.exe	89

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-1-5-21-2548970870-3691742953-3895070203-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\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:372
- 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⤵
  - Suspicious use of WriteProcessMemory
  PID:1552
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:4700
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:2288
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\EsetSecurity\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:348
- - C:\Users\Admin\AppData\Local\EsetSecurity\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe
    "C:\Users\Admin\AppData\Local\EsetSecurity\f7b02278a2310a2657dcca702188af461ce8450dc0c5bced802773ca8eab6f50.exe"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:112

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

2

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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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\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
memory/112-143-0x000001E96D630000-0x000001E96D640000-memory.dmp

Filesize
64KB

Download
memory/372-133-0x000002C82CFB0000-0x000002C82D030000-memory.dmp

Filesize
512KB

Download
memory/372-134-0x000002C847710000-0x000002C847720000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads