guloader | bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89

General

Target
bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
Size 393KB
Sample260810-qsgebaak2z
SHA256 bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89
MD5 61dd141d997193c13c120fdd8feb9acd
SHA1 fced7fc1075285b562c5e08d7c00e6bb78cc190f
SHA512 adccbd3251dd5dcab048f1503bb2480fb3487a965163038581f2f521c9d0a82df7b93c636c931a96edb050b4397f35a10c5893b5f3552dd3ce2f28e3adb2917f
SSDEEP 6144:uLsBN8xoIP1Lr3S8CkVTAqlIoY/53YDBPuOE9iCwGzcWYoB+isgImdCE1dbpL0x:pBoBJrVT+Q9uOE9igYoB5s5mdCOdix
TLSH
T16384E0893B90D89FDB5246729DF2FB7C62B99FD03E0246032340374C3F7AAA95B46549
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery downloader guloader

Malware Config

Signatures

Family: Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Loads dropped DLL 12 IoCs

pid	Process
1644	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
1644	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
1644	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
1644	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
1644	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
1644	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
1644	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
1644	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
1644	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
1644	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
1644	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
1644	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1644	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
352	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\resources\0409\stativs\mutualistic.lnk	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1644	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1644 wrote to memory of 3316	1644	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe	89
PID 1644 wrote to memory of 352	1644	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe	90
PID 1644 wrote to memory of 352	1644	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe	90
PID 352 wrote to memory of 4244	352	bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe	91

C:\Users\Admin\AppData\Local\Temp\bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
"C:\Users\Admin\AppData\Local\Temp\bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1644
- C:\Users\Admin\AppData\Local\Temp\bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
  "C:\Users\Admin\AppData\Local\Temp\bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe"
  2⤵
  PID:3316
- C:\Users\Admin\AppData\Local\Temp\bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
  "C:\Users\Admin\AppData\Local\Temp\bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:352
- - C:\Users\Admin\AppData\Local\Temp\bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe
    "C:\Users\Admin\AppData\Local\Temp\bd117ccb307115d2610149dcc14e9123ed9f5f215dc54474c62c1ee318693f89.exe"
    3⤵
    PID:4244

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

LangDLL.dll

Path C:\Users\Admin\AppData\Local\Temp\nsm862F.tmp\LangDLL.dll
Size 5KB
SHA256 6dff504c6759c418c6635c9b25b8c91d0d9ef7787a3a93610d7670bb563c09df
MD5 f1e9eed02db3a822a7ddef0c724e5f1f
SHA1 65864992f5b6c79c5efbefb5b1354648a8a86709
SHA512 c22b64fff76b25cf53231b8636f07b361d95791c4646787ce7beac27ad6a0de88337dcceb25b5196f97c452dda72e2614647f51a8a18cb4d5228a82ed2e0780c
SSDEEP 48:S46+/fTKYKxbWsptIpBtWZ0iV8jAWiAJCvxft2O2B8mjsofjLl:zRuPbOBtWZBV8jAWiAJCdv2Cmj/L
TLSH
T141C1A470B3C248B9C491453378E773D36A12EE746784600F9B6711AA38209E7AD3EBC3
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nsm862F.tmp\System.dll
Size 11KB
SHA256 bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb
MD5 17ed1c86bd67e78ade4712be48a7d2bd
SHA1 1cc9fe86d6d6030b4dae45ecddce5907991c01a0
SHA512 0cbed521e7d6d1f85977b3f7d3ca7ac34e1b5495b69fd8c7bfa1a846baf53b0ecd06fe1ad02a3599082ffacaf8c71a3bb4e32dec05f8e24859d736b828092cd5
SSDEEP 192:eY24sihno00Wfl97nH6T2enXwWobpWBTU4VtHT7dmN35Ol+Sl:E8QIl975eXqlWBrz7YLOl+
TLSH
T1E3325C12135081F3E4918138C86B3A276B6A15029BF98E57DFD39546BE31BE3BD7D603
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/352-47-0x0000000001AF0000-0x00000000049D9000-memory.dmp

Download

memory/352-50-0x0000000000800000-0x0000000001AE6000-memory.dmp

Download

memory/352-51-0x0000000001AF0000-0x00000000049D9000-memory.dmp

Download

memory/1644-45-0x00000000054C0000-0x00000000083A9000-memory.dmp

Download

memory/1644-46-0x0000000010004000-0x0000000010005000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads