gurcu | 138a262303b34cf0da63a5a8d32217db66f97ef5873dbac0f51ada3659c8cb3f

Analysis

max time kernel
161s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
05-05-2023 21:00

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General

Target

testlibidrequest.exe
Size

183KB
MD5

c2302bfa2c8c29f71e98ebf44f33b9a4
SHA1

2c2d10c1203a4e18fe912069ab702720239dd00f
SHA256

138a262303b34cf0da63a5a8d32217db66f97ef5873dbac0f51ada3659c8cb3f
SHA512

9d0a67476039b8f26216af1c9d56c0f0e6a6d4797eab2640e2f1720d0e451ca09459e2293a0dd66f60325688cba17ad82f9b62cb3fabfb118c2f40950168b0e6
SSDEEP

3072:BXPyScIGLPEPYtsCUwJRuuZES9bVMO0pJLjTTC9nAk9lI6FZ/8y2FP8iKIaQnzHz:djgZES9bVP0pJLjTTC9nAk9lI6FV2Lu

Score

10^/10

gurcu collection spyware stealer

Malware Config

Extracted

Family

gurcu

https://api.telegram.org/bot6278551241:AAGQ87XJeSopFO3i5HU3dXW_vXCr-ESRByQ/sendMessage?chat_id=1396661331

Signatures

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

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-1-5-21-2548970870-3691742953-3895070203-1000\Control Panel\International\Geo\Nation	testlibidrequest.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\Control Panel\International\Geo\Nation	testlibidrequest.exe

Executes dropped EXE 3 IoCs

pid	Process
216	testlibidrequest.exe
2468	testlibidrequest.exe
4448	tor.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 6 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	testlibidrequest.exe
Key opened	\REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	testlibidrequest.exe
Key opened	\REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	testlibidrequest.exe
Key opened	\REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	testlibidrequest.exe
Key opened	\REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	testlibidrequest.exe
Key opened	\REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	testlibidrequest.exe

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
30	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

T1053

pid	Process
1068	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2248	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2468	testlibidrequest.exe
216	testlibidrequest.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	216	testlibidrequest.exe
Token: SeDebugPrivilege	2468	testlibidrequest.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4248 wrote to memory of 4572	4248	testlibidrequest.exe	84
PID 4248 wrote to memory of 4572	4248	testlibidrequest.exe	84
PID 4572 wrote to memory of 3168	4572	cmd.exe	86
PID 4572 wrote to memory of 3168	4572	cmd.exe	86
PID 4572 wrote to memory of 2248	4572	cmd.exe	87
PID 4572 wrote to memory of 2248	4572	cmd.exe	87
PID 4572 wrote to memory of 1068	4572	cmd.exe	88
PID 4572 wrote to memory of 1068	4572	cmd.exe	88
PID 4572 wrote to memory of 216	4572	cmd.exe	89
PID 4572 wrote to memory of 216	4572	cmd.exe	89
PID 2468 wrote to memory of 1588	2468	testlibidrequest.exe	92
PID 2468 wrote to memory of 1588	2468	testlibidrequest.exe	92
PID 2468 wrote to memory of 4448	2468	testlibidrequest.exe	94
PID 2468 wrote to memory of 4448	2468	testlibidrequest.exe	94

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\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	testlibidrequest.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	testlibidrequest.exe

C:\Users\Admin\AppData\Local\Temp\testlibidrequest.exe
"C:\Users\Admin\AppData\Local\Temp\testlibidrequest.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4248
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "testlibidrequest" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\NET.Framework\testlibidrequest.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\testlibidrequest.exe" &&START "" "C:\Users\Admin\AppData\Local\NET.Framework\testlibidrequest.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4572
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:3168
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:2248
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "testlibidrequest" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\NET.Framework\testlibidrequest.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:1068
- - C:\Users\Admin\AppData\Local\NET.Framework\testlibidrequest.exe
    "C:\Users\Admin\AppData\Local\NET.Framework\testlibidrequest.exe"
    3⤵
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:216

C:\Users\Admin\AppData\Local\NET.Framework\testlibidrequest.exe
C:\Users\Admin\AppData\Local\NET.Framework\testlibidrequest.exe
1⤵
- 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:2468
- C:\Windows\System32\tar.exe
  "C:\Windows\System32\tar.exe" -xvzf "C:\Users\Admin\AppData\Local\Temp\tmpD00.tmp" -C "C:\Users\Admin\AppData\Local\z2012buvf7"
  2⤵
  PID:1588
- C:\Users\Admin\AppData\Local\z2012buvf7\tor\tor.exe
  "C:\Users\Admin\AppData\Local\z2012buvf7\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\z2012buvf7\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:4448

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Credentials in Files

T1081

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\testlibidrequest.exe.log

Filesize
847B

MD5
3308a84a40841fab7dfec198b3c31af7

SHA1
4e7ab6336c0538be5dd7da529c0265b3b6523083

SHA256
169bc31a8d1666535977ca170d246a463e6531bb21faab6c48cb4269d9d60b2e

SHA512
97521d5fb94efdc836ea2723098a1f26a7589a76af51358eee17292d29c9325baf53ad6b4496c5ca3e208d1c9b9ad6797a370e2ae378072fc68f5d6e8b73b198

Download Submit
C:\Users\Admin\AppData\Local\NET.Framework\testlibidrequest.exe

Filesize
183KB

MD5
c2302bfa2c8c29f71e98ebf44f33b9a4

SHA1
2c2d10c1203a4e18fe912069ab702720239dd00f

SHA256
138a262303b34cf0da63a5a8d32217db66f97ef5873dbac0f51ada3659c8cb3f

SHA512
9d0a67476039b8f26216af1c9d56c0f0e6a6d4797eab2640e2f1720d0e451ca09459e2293a0dd66f60325688cba17ad82f9b62cb3fabfb118c2f40950168b0e6

Download Submit
C:\Users\Admin\AppData\Local\NET.Framework\testlibidrequest.exe

Filesize
183KB

MD5
c2302bfa2c8c29f71e98ebf44f33b9a4

SHA1
2c2d10c1203a4e18fe912069ab702720239dd00f

SHA256
138a262303b34cf0da63a5a8d32217db66f97ef5873dbac0f51ada3659c8cb3f

SHA512
9d0a67476039b8f26216af1c9d56c0f0e6a6d4797eab2640e2f1720d0e451ca09459e2293a0dd66f60325688cba17ad82f9b62cb3fabfb118c2f40950168b0e6

Download Submit
C:\Users\Admin\AppData\Local\NET.Framework\testlibidrequest.exe

Filesize
183KB

MD5
c2302bfa2c8c29f71e98ebf44f33b9a4

SHA1
2c2d10c1203a4e18fe912069ab702720239dd00f

SHA256
138a262303b34cf0da63a5a8d32217db66f97ef5873dbac0f51ada3659c8cb3f

SHA512
9d0a67476039b8f26216af1c9d56c0f0e6a6d4797eab2640e2f1720d0e451ca09459e2293a0dd66f60325688cba17ad82f9b62cb3fabfb118c2f40950168b0e6

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpD00.tmp

Filesize
13.3MB

MD5
89d2d5811c1aff539bb355f15f3ddad0

SHA1
5bb3577c25b6d323d927200c48cd184a3e27c873

SHA256
b630008f6d3887793d48b87091e56691e292894dd4fa100dc4a418a2f29dcc12

SHA512
39e576124c54143520c5435a2ef9b24506131e13403489c0692f09b89135015d611c4988d4772f8a1e6557fa68b4667d467334461009cee8c2227dfc3e295289

Download Submit
C:\Users\Admin\AppData\Local\z2012buvf7\data\cached-microdesc-consensus.tmp

Filesize
2.3MB

MD5
cf90fa3a9a4f38a4bc7062852dec45ba

SHA1
0ba595a323aca695c9c57a5e0b63b879d9feabfa

SHA256
0851ef13b0a8c84cbffaacfa40442d3cd1bfb47e1114fbe74e2a42fd7a6e6131

SHA512
f77a9aaf72bf408eec09bd60d82fde0b4190cbaae2c5e74b8c577f19050a5e5063c2a0e7b78d70ee2fa63e86584a0bd8106b8d0e953bf59dc80eb1caabee410f

Download Submit
C:\Users\Admin\AppData\Local\z2012buvf7\data\cached-microdescs.new

Filesize
4.7MB

MD5
a969e4899519dee67f4a5d0768350fb2

SHA1
ecfbcfc50c0927a478772329fa9b30b39acf0454

SHA256
759a6cdcfd49dea3948b4b694f4e164ec3713c7ae74f5fc332e289475d1541f7

SHA512
10201699316559e58d5ce177ba105a32466222c39f0884aaa6d73d2ccddf2c06d9f1c5f5219a7595ee0996a7ff6944a04516d68aee6770f25b6ae49c4b7c9f58

Download Submit
C:\Users\Admin\AppData\Local\z2012buvf7\host\hostname

Filesize
64B

MD5
a0815434ec20beda6b1827d9fba574f7

SHA1
8804bb9c7855a3579363d5a6a5e7ed3630b14a53

SHA256
614f6f1f0b00250244aea0ea538567582c55f7a2e7a59cd138dc08f235efd9f8

SHA512
b0ffbec1557d157c61322b200014d16b743205564f9909d9279366f1a08f20627c9a74243bde54d3b0e90defc317c8f8e4141761e83742f0155a97331b1b8e17

Download Submit
C:\Users\Admin\AppData\Local\z2012buvf7\port.dat

Filesize
4B

MD5
73c14008d55c730e10bb9412a5be1a16

SHA1
185ab9ebc070b0b242472a9489383866a9255d5f

SHA256
3d4ba0dbe63a11bc53e7b5b5c6f0d558669989548dbe4287d8f9cea54427c58c

SHA512
fe37b578d1b55a815446a8789fc57446841b291d9d7a90a2f1ae24ccbd952c6ef1a0ed3da665409c118a1017816c75ed168449b8b16dd55c4c9744f0d44b7f54

Download Submit
C:\Users\Admin\AppData\Local\z2012buvf7\report.lock

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
C:\Users\Admin\AppData\Local\z2012buvf7\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\z2012buvf7\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\z2012buvf7\torrc.txt

Filesize
218B

MD5
2aa702ecea3480f7762a11024de22bd5

SHA1
41bbf7399ac1b216cf9c977bd17bc1bc6542ec31

SHA256
ef5408006b5b6c2cd16e2fec1a877b9259dab1d25fbe68653bd9e6d27f30122e

SHA512
292e295a3b2f56e7bb1c5ac8317ddea207773ba9928001f954d439aaf4778cbd07029e53728cfd1ff1013af5697bb3965989525962c303b0800b05e5926d6e29

Download Submit
memory/216-144-0x00000234DCAA0000-0x00000234DCAB0000-memory.dmp

Filesize
64KB

Download
memory/216-142-0x00000234DCAA0000-0x00000234DCAB0000-memory.dmp

Filesize
64KB

Download
memory/2468-147-0x0000022941150000-0x0000022941160000-memory.dmp

Filesize
64KB

Download
memory/2468-190-0x0000022941150000-0x0000022941160000-memory.dmp

Filesize
64KB

Download
memory/4248-133-0x000002540F1A0000-0x000002540F1D4000-memory.dmp

Filesize
208KB

Download
memory/4248-136-0x0000025410EF0000-0x0000025410F00000-memory.dmp

Filesize
64KB

Download