gurcu | 99c5747e5ada4de53bbed50ae5670f04ef4584632c873a060f54f42c70fbcf8c

Analysis

max time kernel
113s
max time network
167s
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

testpanderequests.exe
Size

186KB
MD5

7e7e25597f56f24d262e989abbb31222
SHA1

f3342f1c948a2ef8775d72389cfb76adc7c7ed21
SHA256

99c5747e5ada4de53bbed50ae5670f04ef4584632c873a060f54f42c70fbcf8c
SHA512

0872e14e4ec016ba0489b9ef26f3295173dc5ab37d92f93d2074e2ea518503945dcdaa6e4990942ee9c80bf1dc56d654c77a7059b15aa834abf2671ef28708f8
SSDEEP

3072:m7JN07Kkj7kE5Ft4rTy/MD89bUDlgAfiTMhtlxfhXXV:mf+7fQO289bUBgAfRB7XX

Score

10^/10

gurcu collection spyware stealer

Malware Config

Extracted

Family

gurcu

https://api.telegram.org/bot5975822207:AAFJtzAlzLoF8RfkpKUagQJGRi0ksib6w3g/sendMessage?chat_id=1396661331

Signatures

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

Checks computer location settings 2 TTPs 4 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-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation	testpanderequests.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation	testpanderequests.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation	testpanderequests.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Control Panel\International\Geo\Nation	testpanderequests.exe

Executes dropped EXE 6 IoCs

pid	Process
2768	testpanderequests.exe
1740	tor.exe
2736	testpanderequests.exe
2564	tor.exe
2280	testpanderequests.exe
1384	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 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	testpanderequests.exe
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	testpanderequests.exe
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	testpanderequests.exe

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2084	2736	WerFault.exe	102
4924	2280	WerFault.exe	111

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
3792	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2280	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2768	testpanderequests.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2768	testpanderequests.exe
Token: SeDebugPrivilege	2736	testpanderequests.exe
Token: SeDebugPrivilege	2280	testpanderequests.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 644 wrote to memory of 432	644	testpanderequests.exe	87
PID 644 wrote to memory of 432	644	testpanderequests.exe	87
PID 432 wrote to memory of 3204	432	cmd.exe	89
PID 432 wrote to memory of 3204	432	cmd.exe	89
PID 432 wrote to memory of 2280	432	cmd.exe	90
PID 432 wrote to memory of 2280	432	cmd.exe	90
PID 432 wrote to memory of 3792	432	cmd.exe	91
PID 432 wrote to memory of 3792	432	cmd.exe	91
PID 432 wrote to memory of 2768	432	cmd.exe	92
PID 432 wrote to memory of 2768	432	cmd.exe	92
PID 2768 wrote to memory of 2816	2768	testpanderequests.exe	93
PID 2768 wrote to memory of 2816	2768	testpanderequests.exe	93
PID 2768 wrote to memory of 1740	2768	testpanderequests.exe	95
PID 2768 wrote to memory of 1740	2768	testpanderequests.exe	95
PID 2736 wrote to memory of 2564	2736	testpanderequests.exe	103
PID 2736 wrote to memory of 2564	2736	testpanderequests.exe	103
PID 2280 wrote to memory of 1384	2280	testpanderequests.exe	112
PID 2280 wrote to memory of 1384	2280	testpanderequests.exe	112

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-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	testpanderequests.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2275444769-3691835758-4097679484-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	testpanderequests.exe

C:\Users\Admin\AppData\Local\Temp\testpanderequests.exe
"C:\Users\Admin\AppData\Local\Temp\testpanderequests.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:644
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "testpanderequests" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\NET.Framework\testpanderequests.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\testpanderequests.exe" &&START "" "C:\Users\Admin\AppData\Local\NET.Framework\testpanderequests.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:432
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:3204
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:2280
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "testpanderequests" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\NET.Framework\testpanderequests.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:3792
- - C:\Users\Admin\AppData\Local\NET.Framework\testpanderequests.exe
    "C:\Users\Admin\AppData\Local\NET.Framework\testpanderequests.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:2768
  - - C:\Windows\System32\tar.exe
      "C:\Windows\System32\tar.exe" -xvzf "C:\Users\Admin\AppData\Local\Temp\tmpAA6E.tmp" -C "C:\Users\Admin\AppData\Local\e6j3sgsvmi"
      4⤵
      PID:2816
  - - C:\Users\Admin\AppData\Local\e6j3sgsvmi\tor\tor.exe
      "C:\Users\Admin\AppData\Local\e6j3sgsvmi\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\e6j3sgsvmi\torrc.txt"
      4⤵
      Executes dropped EXE
      PID:1740

C:\Users\Admin\AppData\Local\NET.Framework\testpanderequests.exe
C:\Users\Admin\AppData\Local\NET.Framework\testpanderequests.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Users\Admin\AppData\Local\e6j3sgsvmi\tor\tor.exe
  "C:\Users\Admin\AppData\Local\e6j3sgsvmi\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\e6j3sgsvmi\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:2564
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2736 -s 1828
  2⤵
  - Program crash
  PID:2084

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 468 -p 2736 -ip 2736
1⤵
PID:3968

C:\Users\Admin\AppData\Local\NET.Framework\testpanderequests.exe
C:\Users\Admin\AppData\Local\NET.Framework\testpanderequests.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Users\Admin\AppData\Local\e6j3sgsvmi\tor\tor.exe
  "C:\Users\Admin\AppData\Local\e6j3sgsvmi\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\e6j3sgsvmi\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:1384
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2280 -s 1844
  2⤵
  - Program crash
  PID:4924

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 420 -p 2280 -ip 2280
1⤵
PID:4212

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

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Downloads

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

Filesize
1KB

MD5
fc1be6f3f52d5c841af91f8fc3f790cb

SHA1
ac79b4229e0a0ce378ae22fc6104748c5f234511

SHA256
6da862f7c7feffca99cd58712ece93928c6ca6aed617f5d8c10a4718eaa2a910

SHA512
2f46165017309ee1a0c1b23e30a71e52e86ad8933e2649bf58c3f4628c5aa75659f5b8f6be32c2882f220b2f3ff2fd50d8766bf0a3708c94c2c634c051a05ea6

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

Filesize
186KB

MD5
7e7e25597f56f24d262e989abbb31222

SHA1
f3342f1c948a2ef8775d72389cfb76adc7c7ed21

SHA256
99c5747e5ada4de53bbed50ae5670f04ef4584632c873a060f54f42c70fbcf8c

SHA512
0872e14e4ec016ba0489b9ef26f3295173dc5ab37d92f93d2074e2ea518503945dcdaa6e4990942ee9c80bf1dc56d654c77a7059b15aa834abf2671ef28708f8

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

Filesize
186KB

MD5
7e7e25597f56f24d262e989abbb31222

SHA1
f3342f1c948a2ef8775d72389cfb76adc7c7ed21

SHA256
99c5747e5ada4de53bbed50ae5670f04ef4584632c873a060f54f42c70fbcf8c

SHA512
0872e14e4ec016ba0489b9ef26f3295173dc5ab37d92f93d2074e2ea518503945dcdaa6e4990942ee9c80bf1dc56d654c77a7059b15aa834abf2671ef28708f8

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

Filesize
186KB

MD5
7e7e25597f56f24d262e989abbb31222

SHA1
f3342f1c948a2ef8775d72389cfb76adc7c7ed21

SHA256
99c5747e5ada4de53bbed50ae5670f04ef4584632c873a060f54f42c70fbcf8c

SHA512
0872e14e4ec016ba0489b9ef26f3295173dc5ab37d92f93d2074e2ea518503945dcdaa6e4990942ee9c80bf1dc56d654c77a7059b15aa834abf2671ef28708f8

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

Filesize
186KB

MD5
7e7e25597f56f24d262e989abbb31222

SHA1
f3342f1c948a2ef8775d72389cfb76adc7c7ed21

SHA256
99c5747e5ada4de53bbed50ae5670f04ef4584632c873a060f54f42c70fbcf8c

SHA512
0872e14e4ec016ba0489b9ef26f3295173dc5ab37d92f93d2074e2ea518503945dcdaa6e4990942ee9c80bf1dc56d654c77a7059b15aa834abf2671ef28708f8

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpAA6E.tmp

Filesize
13.3MB

MD5
89d2d5811c1aff539bb355f15f3ddad0

SHA1
5bb3577c25b6d323d927200c48cd184a3e27c873

SHA256
b630008f6d3887793d48b87091e56691e292894dd4fa100dc4a418a2f29dcc12

SHA512
39e576124c54143520c5435a2ef9b24506131e13403489c0692f09b89135015d611c4988d4772f8a1e6557fa68b4667d467334461009cee8c2227dfc3e295289

Download Submit
C:\Users\Admin\AppData\Local\e6j3sgsvmi\data\cached-microdesc-consensus.tmp

Filesize
2.3MB

MD5
cf90fa3a9a4f38a4bc7062852dec45ba

SHA1
0ba595a323aca695c9c57a5e0b63b879d9feabfa

SHA256
0851ef13b0a8c84cbffaacfa40442d3cd1bfb47e1114fbe74e2a42fd7a6e6131

SHA512
f77a9aaf72bf408eec09bd60d82fde0b4190cbaae2c5e74b8c577f19050a5e5063c2a0e7b78d70ee2fa63e86584a0bd8106b8d0e953bf59dc80eb1caabee410f

Download Submit
C:\Users\Admin\AppData\Local\e6j3sgsvmi\data\cached-microdescs.new

Filesize
4.5MB

MD5
21b0f8c8fdfe7e7e0d7514e0e628e690

SHA1
39aee69a3cd7aaa75cc039f90d51421645f5bf1b

SHA256
4c315696e428fb49ba22b4045e81a0b30a61013cbb2b42f45c2631a2e8ee9a58

SHA512
d7f9200122be1f9b4eb8661c3fc39dbec00ef6b7212e0aaa41bec3a8721a879a49b568ef13b9140497c58becf1bdd4919606052d1337b62024d7ba6f7a7ae1f7

Download Submit
C:\Users\Admin\AppData\Local\e6j3sgsvmi\host\hostname

Filesize
64B

MD5
1fa77b814ab47a1396ba73e037bde032

SHA1
4ef5af152e36d6976fc74f0d8de1b030aefb1aa4

SHA256
b759240ad06021203eb7d5d6a2e3294aa904159a5fa35826b1e3b56357f4ea23

SHA512
b4674a63a83ed5582e4c4095499ab3b03f54145e3231a350d32654e623eaf08c8d5196bd69f99ebad8ddca87b12a6041d2696a87f3aa83797b0496c38de81f68

Download Submit
C:\Users\Admin\AppData\Local\e6j3sgsvmi\port.dat

Filesize
4B

MD5
a91bc76c2a6302e573badedcbf57bf7a

SHA1
00904c4f108159ca23146d5a6c69bcbb8ad65b7b

SHA256
54bb9f1f6273c476041d12e0edcbffa9fb8db221c4ee6e1b49d60a47c73dce89

SHA512
2a14aa87f7132750f931e0d318cf5c4bf165a488101e3b0439842849111dcd1602e59cb0f9805695488d290bf007a5e5bcbd301c7cf64920bd6f33025d67eef1

Download Submit
C:\Users\Admin\AppData\Local\e6j3sgsvmi\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\e6j3sgsvmi\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\e6j3sgsvmi\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\e6j3sgsvmi\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\e6j3sgsvmi\torrc.txt

Filesize
218B

MD5
d253b14adbaf2fbe9e03ca52f2d2d070

SHA1
8cf7ea43d875fefdfc7f2895bb2f6bed4bcf1886

SHA256
7099fefd6a47c4de5726e2ea6cb4db975fbcb8cd3c649e11bb204f972a85746d

SHA512
9ff0ab726a238488c90663a303c8da496e7ad183047157bbdb586bca84e79712def424aca2d8c33fefeddb995b874688b9f4b71d551a23c4b1d8050374265771

Download Submit
memory/644-133-0x00000195FCCD0000-0x00000195FCD04000-memory.dmp

Filesize
208KB

Download
memory/2280-215-0x0000021BB7180000-0x0000021BB7190000-memory.dmp

Filesize
64KB

Download
memory/2736-185-0x000001D9D8CA0000-0x000001D9D8CB0000-memory.dmp

Filesize
64KB

Download
memory/2768-182-0x000002E4EB970000-0x000002E4EB980000-memory.dmp

Filesize
64KB

Download
memory/2768-142-0x000002E4EB970000-0x000002E4EB980000-memory.dmp

Filesize
64KB

Download