guloader | d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004

Analysis

user interaction
yes
max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
07/07/2026, 11:39

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe
Size 219.0MB
Sample260707-nslypad13q
SHA256 d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004
MD5 4a072dcc6eaa5cb464bb4a75232feb01
SHA1 4f60d13d81115d022af98ef2f3546f0dc58e06c4
SHA512 e81282d58230bab07220bcb85d24d8e9f94940651c8912d303ccce976d44086fa453f38f6d7ecffa0ffdb26a542cac0ddfed570627026d85ee9ef178571e577f
SSDEEP 12288:DMw3v3lisDpRfr4c6iPxNB7A2PESAtg0vb8fZoU53N:DMwNz9RfbxNB7Qg8brY
TLSH
T1DEB8125120D1D87AC5AAE233F97F17F89A95EE09D4658D0B23D97E7834B01D1AE0FB20
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 7 IoCs

pid	Process
3144	d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe
3144	d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe
3144	d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe
3144	d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe
3144	d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe
3144	d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe
3144	d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3144	d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe
2288	d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.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	d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3144	d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3144 wrote to memory of 2080	3144	d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe	89
PID 3144 wrote to memory of 2288	3144	d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe	90
PID 3144 wrote to memory of 2288	3144	d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe	90
PID 2288 wrote to memory of 4028	2288	d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe	98

C:\Users\Admin\AppData\Local\Temp\d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe
"C:\Users\Admin\AppData\Local\Temp\d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3144
- C:\Users\Admin\AppData\Local\Temp\d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe
  "C:\Users\Admin\AppData\Local\Temp\d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe"
  2⤵
  PID:2080
- C:\Users\Admin\AppData\Local\Temp\d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe
  "C:\Users\Admin\AppData\Local\Temp\d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe"
  2⤵
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2288
- - C:\Users\Admin\AppData\Local\Temp\d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe
    "C:\Users\Admin\AppData\Local\Temp\d4b6d3abac79bfa91ca900d7bbfccd83988fabb91fb28879cb9dca8198596004.exe"
    3⤵
    PID:4028

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

LangDLL.dll

Path C:\Users\Admin\AppData\Local\Temp\nslB93A.tmp\LangDLL.dll
Size 5KB
SHA256 09acfc5ee34a1dfa1af3a9d34f00c3b1327b56641feebd536e13752349c08ac8
MD5 014a3be4a7c1ccb217916dbf4f222bd1
SHA1 9b4c41eb0e84886beb5591d8357155e27f9c68ed
SHA512 0f3d1bf548e29a136150b699665a3f22c6ea2821701737363fa2920b51c391d735f1eae92dea8af655e7d07304bd3d06e4aff3f5a82fa22bcf5d1690013eb922
SSDEEP 48:S46+/iTKYKxbWsptIpBtWZ0iV8jAWiAJCvxft2O2B8mMofjLl:zsuPbOBtWZBV8jAWiAJCdv2CmfL
TLSH
T143C19470F3C248B9C491413368E737D36612EE746784500F9B6311AA38209E7AD3EBC3
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nslB93A.tmp\System.dll
Size 12KB
SHA256 7a9ddee34562cd3703f1502b5c70e99cd5bba15de2b6845a3555033d7f6cb2a5
MD5 564bb0373067e1785cba7e4c24aab4bf
SHA1 7c9416a01d821b10b2eef97b80899d24014d6fc1
SHA512 22c61a323cb9293d7ec5c7e7e60674d0e2f7b29d55be25eb3c128ea2cd7440a1400cee17c43896b996278007c0d247f331a9b8964e3a40a0eb1404a9596c4472
SSDEEP 192:nenY0qWTlt70IAj/lQ0sEWc/wtYbBH2aDybC7y+XBDIwL:n8+Qlt70Fj/lQRY/9VjjfL
TLSH
T1F6427D1193B089F2F590593805A67F2A6FBEAC5C27E44963CFE345853D702DFA47A243
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2288-38-0x00000000016F0000-0x0000000003E21000-memory.dmp

Download

memory/2288-39-0x0000000000490000-0x00000000016E4000-memory.dmp

Download

memory/2288-40-0x00000000016F0000-0x0000000003E21000-memory.dmp

Download

memory/3144-35-0x0000000004E00000-0x0000000007531000-memory.dmp

Download

memory/3144-36-0x0000000074465000-0x0000000074466000-memory.dmp

Download

memory/3144-37-0x0000000004E00000-0x0000000007531000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads