gurcu | e76e206e8ae24f95a329b4f6ecdf1f22b76b07a8c628c0619b781bdba2d85732

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
13-05-2023 10:20

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General

Target

qsteemp.exe
Size

165KB
MD5

90cd3202af31b431dcc5e47cf3b8c0d7
SHA1

747f68fb8f122241059c219eeeeadac61e8215be
SHA256

e76e206e8ae24f95a329b4f6ecdf1f22b76b07a8c628c0619b781bdba2d85732
SHA512

b1025ca0dfa86cd6649337bfc6b555a9101fce38955566424955a6fe07782bea41eeaf4f233946eb6be5756b23398129bad98a87c6b07478f787df8bf3235481
SSDEEP

3072:fV6h5WXwyNUD44ykiQbGjlc/SGvjQtbGTl2MRMc:9AuwMPkhbGRc/T6A

Score

10^/10

gurcu spyware stealer

Malware Config

Signatures

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

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-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	qsteemp.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	qsteemp.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	qsteemp.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	qsteemp.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	qsteemp.exe

Executes dropped EXE 8 IoCs

pid	Process
4888	qsteemp.exe
2236	tor.exe
1548	qsteemp.exe
1376	tor.exe
2992	qsteemp.exe
828	tor.exe
1948	qsteemp.exe
1516	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

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
16	ip-api.com
97	ip-api.com
136	ip-api.com

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

System Information Discovery
T1082

Program crash 3 IoCs

pid	pid_target	Process	procid_target
4396	1548	WerFault.exe	97
3916	2992	WerFault.exe	104
4240	1948	WerFault.exe	109

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
4812	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3368	PING.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4888	qsteemp.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4888	qsteemp.exe
Token: SeDebugPrivilege	1548	qsteemp.exe
Token: SeDebugPrivilege	2992	qsteemp.exe
Token: SeDebugPrivilege	1948	qsteemp.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2000 wrote to memory of 3308	2000	qsteemp.exe	80
PID 2000 wrote to memory of 3308	2000	qsteemp.exe	80
PID 3308 wrote to memory of 3560	3308	cmd.exe	82
PID 3308 wrote to memory of 3560	3308	cmd.exe	82
PID 3308 wrote to memory of 3368	3308	cmd.exe	83
PID 3308 wrote to memory of 3368	3308	cmd.exe	83
PID 3308 wrote to memory of 4812	3308	cmd.exe	87
PID 3308 wrote to memory of 4812	3308	cmd.exe	87
PID 3308 wrote to memory of 4888	3308	cmd.exe	88
PID 3308 wrote to memory of 4888	3308	cmd.exe	88
PID 4888 wrote to memory of 624	4888	qsteemp.exe	90
PID 4888 wrote to memory of 624	4888	qsteemp.exe	90
PID 4888 wrote to memory of 2236	4888	qsteemp.exe	92
PID 4888 wrote to memory of 2236	4888	qsteemp.exe	92
PID 1548 wrote to memory of 1376	1548	qsteemp.exe	98
PID 1548 wrote to memory of 1376	1548	qsteemp.exe	98
PID 2992 wrote to memory of 828	2992	qsteemp.exe	105
PID 2992 wrote to memory of 828	2992	qsteemp.exe	105
PID 1948 wrote to memory of 1516	1948	qsteemp.exe	110
PID 1948 wrote to memory of 1516	1948	qsteemp.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

C:\Users\Admin\AppData\Local\Temp\qsteemp.exe
"C:\Users\Admin\AppData\Local\Temp\qsteemp.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2000
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C chcp 65001 && ping 127.0.0.1 && schtasks /create /tn "qsteemp" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\NET.Framework\qsteemp.exe" /rl HIGHEST /f && DEL /F /S /Q /A "C:\Users\Admin\AppData\Local\Temp\qsteemp.exe" &&START "" "C:\Users\Admin\AppData\Local\NET.Framework\qsteemp.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3308
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:3560
- - C:\Windows\system32\PING.EXE
    ping 127.0.0.1
    3⤵
    - Runs ping.exe
    PID:3368
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "qsteemp" /sc MINUTE /tr "C:\Users\Admin\AppData\Local\NET.Framework\qsteemp.exe" /rl HIGHEST /f
    3⤵
    - Creates scheduled task(s)
    PID:4812
- - C:\Users\Admin\AppData\Local\NET.Framework\qsteemp.exe
    "C:\Users\Admin\AppData\Local\NET.Framework\qsteemp.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4888
  - - C:\Windows\System32\tar.exe
      "C:\Windows\System32\tar.exe" -xvzf "C:\Users\Admin\AppData\Local\Temp\tmp99B4.tmp" -C "C:\Users\Admin\AppData\Local\6kfrvwd31o"
      4⤵
      PID:624
  - - C:\Users\Admin\AppData\Local\6kfrvwd31o\tor\tor.exe
      "C:\Users\Admin\AppData\Local\6kfrvwd31o\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\6kfrvwd31o\torrc.txt"
      4⤵
      Executes dropped EXE
      PID:2236

C:\Users\Admin\AppData\Local\NET.Framework\qsteemp.exe
C:\Users\Admin\AppData\Local\NET.Framework\qsteemp.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1548
- C:\Users\Admin\AppData\Local\6kfrvwd31o\tor\tor.exe
  "C:\Users\Admin\AppData\Local\6kfrvwd31o\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\6kfrvwd31o\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:1376
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 1548 -s 2020
  2⤵
  - Program crash
  PID:4396

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 408 -p 1548 -ip 1548
1⤵
PID:4280

C:\Users\Admin\AppData\Local\NET.Framework\qsteemp.exe
C:\Users\Admin\AppData\Local\NET.Framework\qsteemp.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Users\Admin\AppData\Local\6kfrvwd31o\tor\tor.exe
  "C:\Users\Admin\AppData\Local\6kfrvwd31o\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\6kfrvwd31o\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:828
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2992 -s 1960
  2⤵
  - Program crash
  PID:3916

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 464 -p 2992 -ip 2992
1⤵
PID:3900

C:\Users\Admin\AppData\Local\NET.Framework\qsteemp.exe
C:\Users\Admin\AppData\Local\NET.Framework\qsteemp.exe
1⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Users\Admin\AppData\Local\6kfrvwd31o\tor\tor.exe
  "C:\Users\Admin\AppData\Local\6kfrvwd31o\tor\tor.exe" -f "C:\Users\Admin\AppData\Local\6kfrvwd31o\torrc.txt"
  2⤵
  - Executes dropped EXE
  PID:1516
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 1948 -s 1908
  2⤵
  - Program crash
  PID:4240

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 504 -p 1948 -ip 1948
1⤵
PID:4016

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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\6kfrvwd31o\data\cached-microdesc-consensus.tmp

Filesize
2.3MB

MD5
9f4cbfb523bb3180a69655bcc95e2425

SHA1
75997fe6778ed59488a06c61b4e5dcfa663cee39

SHA256
0d8999c47391b7911e0d1f61805fca95fd86d33a0851c6f89daea25d9eec9ff9

SHA512
1889494743990d100af8fda48c4cf52b0028b791a533c09a5f3faa2241bda0855100e1c2e4d4051afb7cec9f8f2c44baa5214ec2964030bf8a4bb4b03bfbe41c

Download Submit
C:\Users\Admin\AppData\Local\6kfrvwd31o\data\cached-microdescs.new

Filesize
5.5MB

MD5
3335820691e2be5973581d962b92dcb9

SHA1
7c1b23426cd3a68952886bf880c9cc8dc0261f65

SHA256
5f46d4c313286dad02eefc21040edd7ecba8ed52d17ca49a5c664e085e7487da

SHA512
5a50717fd9257a7dd1f7c7a039868d638e1b9364b69e8de1bf27ec83587c4ad35dc305659a9cc0a035c0d1b75922a423b5da800d686e8a4dc2edb33207191c68

Download Submit
C:\Users\Admin\AppData\Local\6kfrvwd31o\host\hostname

Filesize
64B

MD5
7e9699d74d8914a959b887d68c16e261

SHA1
8bd8379627634b6001f934f0439a3bc3cb034ac2

SHA256
953e2aad2af30b8261a8ebd42f8d96f75d71d7825b2f80d68118b60af32143af

SHA512
fbe3ba4c744a5e85989b471498312c4d39fc45487097784eb214bc2d5bec8705cd410514e567f7e13e980e45ebd670ff95d2cd30765cfafe9f7f492d17d65232

Download Submit
C:\Users\Admin\AppData\Local\6kfrvwd31o\port.dat

Filesize
4B

MD5
3ce6d3c8830d27ec2e6a1936ecbaa514

SHA1
4602ed8ba66c1df84a638300e7d1ef2a697435f2

SHA256
0b584334ec828c208ef73f6063b3cc5001b51dc9d86f6d3f45362928a482a9e2

SHA512
28623001a6cb12b46ac27e40b6c2195dbb94f33c1aba2ce9ee95c1ee071eecda96cfe2c8949c13232274b2c15182f14a1692483920120ec0f4d5f4e8fcaa4ba1

Download Submit
C:\Users\Admin\AppData\Local\6kfrvwd31o\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\6kfrvwd31o\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\6kfrvwd31o\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\6kfrvwd31o\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\6kfrvwd31o\tor\tor.exe

Filesize
7.4MB

MD5
88590909765350c0d70c6c34b1f31dd2

SHA1
129b27c3926e53e5df6d44cc6adf39c3a8d9ebf7

SHA256
46fe244b548265c78ab961e8f787bc8bf21edbcaaf175fa3b8be3137c6845a82

SHA512
a8af08d9169a31a1c3419d4e6e8fbe608c800d323840563b5a560d3e09e78a492201f07cc0d3864efbff8ad81e59885fc43a6b749e0a3377aa8555df258af192

Download Submit
C:\Users\Admin\AppData\Local\6kfrvwd31o\torrc.txt

Filesize
218B

MD5
a2d4e8d1bb3130088cbc076d82c32233

SHA1
aff83b693feadcf2db0480b49275451bf6b1c45e

SHA256
f0096f2fd1254ec726a315c884a6a8cadf11fbc89c3bad720fa6c11966e14949

SHA512
386570bc87b408d4b85e0c1361305e249586202ce8410ba062ac2962098f9937f895f6df95d3229ff10b9bb0b973088ef2053dc76ab39d90a8794777c99ee85c

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

Filesize
1KB

MD5
fc1be6f3f52d5c841af91f8fc3f790cb

SHA1
ac79b4229e0a0ce378ae22fc6104748c5f234511

SHA256
6da862f7c7feffca99cd58712ece93928c6ca6aed617f5d8c10a4718eaa2a910

SHA512
2f46165017309ee1a0c1b23e30a71e52e86ad8933e2649bf58c3f4628c5aa75659f5b8f6be32c2882f220b2f3ff2fd50d8766bf0a3708c94c2c634c051a05ea6

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

Filesize
165KB

MD5
90cd3202af31b431dcc5e47cf3b8c0d7

SHA1
747f68fb8f122241059c219eeeeadac61e8215be

SHA256
e76e206e8ae24f95a329b4f6ecdf1f22b76b07a8c628c0619b781bdba2d85732

SHA512
b1025ca0dfa86cd6649337bfc6b555a9101fce38955566424955a6fe07782bea41eeaf4f233946eb6be5756b23398129bad98a87c6b07478f787df8bf3235481

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

Filesize
165KB

MD5
90cd3202af31b431dcc5e47cf3b8c0d7

SHA1
747f68fb8f122241059c219eeeeadac61e8215be

SHA256
e76e206e8ae24f95a329b4f6ecdf1f22b76b07a8c628c0619b781bdba2d85732

SHA512
b1025ca0dfa86cd6649337bfc6b555a9101fce38955566424955a6fe07782bea41eeaf4f233946eb6be5756b23398129bad98a87c6b07478f787df8bf3235481

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

Filesize
165KB

MD5
90cd3202af31b431dcc5e47cf3b8c0d7

SHA1
747f68fb8f122241059c219eeeeadac61e8215be

SHA256
e76e206e8ae24f95a329b4f6ecdf1f22b76b07a8c628c0619b781bdba2d85732

SHA512
b1025ca0dfa86cd6649337bfc6b555a9101fce38955566424955a6fe07782bea41eeaf4f233946eb6be5756b23398129bad98a87c6b07478f787df8bf3235481

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

Filesize
165KB

MD5
90cd3202af31b431dcc5e47cf3b8c0d7

SHA1
747f68fb8f122241059c219eeeeadac61e8215be

SHA256
e76e206e8ae24f95a329b4f6ecdf1f22b76b07a8c628c0619b781bdba2d85732

SHA512
b1025ca0dfa86cd6649337bfc6b555a9101fce38955566424955a6fe07782bea41eeaf4f233946eb6be5756b23398129bad98a87c6b07478f787df8bf3235481

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

Filesize
165KB

MD5
90cd3202af31b431dcc5e47cf3b8c0d7

SHA1
747f68fb8f122241059c219eeeeadac61e8215be

SHA256
e76e206e8ae24f95a329b4f6ecdf1f22b76b07a8c628c0619b781bdba2d85732

SHA512
b1025ca0dfa86cd6649337bfc6b555a9101fce38955566424955a6fe07782bea41eeaf4f233946eb6be5756b23398129bad98a87c6b07478f787df8bf3235481

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp99B4.tmp

Filesize
13.3MB

MD5
89d2d5811c1aff539bb355f15f3ddad0

SHA1
5bb3577c25b6d323d927200c48cd184a3e27c873

SHA256
b630008f6d3887793d48b87091e56691e292894dd4fa100dc4a418a2f29dcc12

SHA512
39e576124c54143520c5435a2ef9b24506131e13403489c0692f09b89135015d611c4988d4772f8a1e6557fa68b4667d467334461009cee8c2227dfc3e295289

Download Submit
memory/1548-195-0x000001A7DD8D0000-0x000001A7DD8E0000-memory.dmp

Filesize
64KB

Download
memory/2000-133-0x0000025521FF0000-0x0000025522020000-memory.dmp

Filesize
192KB

Download
memory/2000-134-0x000002553C5F0000-0x000002553C600000-memory.dmp

Filesize
64KB

Download
memory/4888-185-0x0000024A4B2F0000-0x0000024A4B300000-memory.dmp

Filesize
64KB

Download
memory/4888-142-0x0000024A4B2F0000-0x0000024A4B300000-memory.dmp

Filesize
64KB

Download