guloader | 18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20250129-en
resource tags

arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system
submitted
07-02-2025 04:21

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General

Target

18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe
Size

888KB
MD5

acd8c7211f329be0c798161973d6e437
SHA1

93b804432267947523bdbaf80d6d36ec7a028c5c
SHA256

18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01
SHA512

5bd28a73388a85942ad7a1fb568f20dc8b781e2be1aea61fba3def3fbdb8bb7178817889139b74277824fae29a15b87b8ddeba7c9326d6dd2e7c6b874256019b
SSDEEP

24576:F0fVDZQOtivSE8uN4BoR7qbiDLTmAYu+oA0Ar2P:St6O0vNNioKkMJ9C

Score

10^/10

guloader collection discovery downloader spyware stealer

Malware Config

Signatures

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

Loads dropped DLL 2 IoCs

pid	Process
1052	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe
1052	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe

Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1121399784-3202166597-3503557106-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe
Key opened	\REGISTRY\USER\S-1-5-21-1121399784-3202166597-3503557106-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe
Key opened	\REGISTRY\USER\S-1-5-21-1121399784-3202166597-3503557106-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe

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

Web Service

T1102

flow	ioc
67	drive.google.com
68	drive.google.com

Looks up external IP address via web service 3 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
80	checkip.dyndns.org
83	reallyfreegeoip.org
84	reallyfreegeoip.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
3904	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1052	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe
3904	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\komplementrt\halstrkldernes.dds	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.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	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3904	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1052	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3904	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3904	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1052 wrote to memory of 3904	1052	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe	100
PID 1052 wrote to memory of 3904	1052	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe	100
PID 1052 wrote to memory of 3904	1052	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe	100
PID 1052 wrote to memory of 3904	1052	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe	100

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1121399784-3202166597-3503557106-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1121399784-3202166597-3503557106-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe

C:\Users\Admin\AppData\Local\Temp\18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe
"C:\Users\Admin\AppData\Local\Temp\18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.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:1052
- C:\Users\Admin\AppData\Local\Temp\18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe
  "C:\Users\Admin\AppData\Local\Temp\18e8dc7f0541f1b4d3394d57ff222b78d9a6c22c2151512dd84d28cd9fbb7f01.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:3904

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsnE481.tmp\System.dll

Filesize
11KB

MD5
960a5c48e25cf2bca332e74e11d825c9

SHA1
da35c6816ace5daf4c6c1d57b93b09a82ecdc876

SHA256
484f8e9f194ed9016274ef3672b2c52ed5f574fb71d3884edf3c222b758a75a2

SHA512
cc450179e2d0d56aee2ccf8163d3882978c4e9c1aa3d3a95875fe9ba9831e07ddfd377111dc67f801fa53b6f468a418f086f1de7c71e0a5b634e1ae2a67cd3da

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsoE5BB.tmp

Filesize
4B

MD5
cde63b34c142af0a38cbe83791c964f8

SHA1
ece2b194b486118b40ad12c1f0e9425dd0672424

SHA256
65e2d70166c9a802b7ad2a87129b8945f083e5f268878790a9d1f1c03f47938d

SHA512
0559d3d34ad64ccc27e685431c24fc6ead0f645db14fa0e125a64fb67dbd158c15432c1fc5407811aac8a3486090dfbcfcbc3c6bf5aa0ec73f979ef62d14853c

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsoE5BB.tmp

Filesize
5B

MD5
e2fecc970546c3418917879fe354826c

SHA1
63f1c1dd01b87704a6b6c99fd9f141e0a3064f16

SHA256
ff91566d755f5d038ae698a2cc0a7d4d14e5273afafc37b6f03afda163768fa0

SHA512
3c4a68cbaee94f986515f43305a0e7620c14c30213d4a17db4a3e8a1b996764eb688bf733f472fc52073c2c80bb5229bb29411d7601aefe1c4370e230c341a0a

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsoE5BB.tmp

Filesize
41B

MD5
088d509592627d226179707a88a1f4ee

SHA1
8c03f8a469d4dc4e7f65da8daa8c0e9cdebbe9f4

SHA256
7938b90dbe50e63bd3bc2b7ae77d43ba7c01c15354ab01f9a0b63ebac56b796d

SHA512
f36c70cbb4dbb09a8081b472ceb712b983a676d5a34dc19ec4d0d95126c4e6b80cdd66640e304eb35445503255c9aac22edf386bf6782151844e8df4e1874d5f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsoE6A6.tmp

Filesize
1B

MD5
8ce4b16b22b58894aa86c421e8759df3

SHA1
13fbd79c3d390e5d6585a21e11ff5ec1970cff0c

SHA256
8254c329a92850f6d539dd376f4816ee2764517da5e0235514af433164480d7a

SHA512
2af8a9104b3f64ed640d8c7e298d2d480f03a3610cbc2b33474321ec59024a48592ea8545e41e09d5d1108759df48ede0054f225df39d4f0f312450e0aa9dd25

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsoE6A6.tmp

Filesize
2B

MD5
25bc6654798eb508fa0b6343212a74fe

SHA1
15d5e1d3b948fd5986aaff7d9419b5e52c75fc93

SHA256
8e5202705183bd3a20a29e224499b0f77a8273ee33cd93cca71043c57ad4bdfc

SHA512
5868c6241ed3cfcc5c34bfe42e4b9f5c69e74975e524771d8c9f35cafc13fd01cd943ec4d8caefee79a1f4a457e69d20b7a86f88db83a5bc3e6bd8a619972898

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsoE6A6.tmp

Filesize
3B

MD5
4e27f2226785e9abbe046fc592668860

SHA1
28b18a7f383131df509f7191f946a32c5a2e410c

SHA256
01a219245e1501fee01ce0baea8f6065ce5162cea12fa570689a07c9717be81d

SHA512
2a23585835bdb5db8175cab265566042282841efdcee8aaba8b9b5d466b0f165c0c5973033ce94bb9a8f07a956689247981ea07ac5a51408263e1653d9710adb

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsoE6A6.tmp

Filesize
6B

MD5
50484c19f1afdaf3841a0d821ed393d2

SHA1
c65a0fb7e74ffd2c9fc3a0f9aacb0f6a24b0a68b

SHA256
6923dd1bc0460082c5d55a831908c24a282860b7f1cd6c2b79cf1bc8857c639c

SHA512
d51a20d67571fe70bcd6c36e1382a3c342f42671c710090b75fcfc2405ce24488e03a7131eefe4751d0bd3aeaad816605ad10c8e3258d72fcf379e32416cbf3b

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsoE6A6.tmp

Filesize
7B

MD5
67cfa7364c4cf265b047d87ff2e673ae

SHA1
56e27889277981a9b63fcf5b218744a125bbc2fa

SHA256
639b68bd180b47d542dd001d03557ee2d5b3065c3c783143bc9fb548f3fd7713

SHA512
17f28a136b20b89e9c3a418b08fd8e6fcaac960872dc33b2481af2d872efc44228f420759c57724f5d953c7ba98f2283e2acc7dfe5a58cbf719c6480ec7a648b

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsoE6A6.tmp

Filesize
8B

MD5
c3cb69218b85c3260387fb582cb518dd

SHA1
961c892ded09a4cbb5392097bb845ccba65902ad

SHA256
1c329924865741e0222d3ead23072cfbed14f96e2b0432573068eb0640513101

SHA512
2402fffeb89c531db742bf6f5466eee8fe13edf97b8ecfc2cace3522806b322924d1ca81dda25e59b4047b8f40ad11ae9216e0a0d5c7fc6beef4368eb9551422

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsoE6A6.tmp

Filesize
9B

MD5
2b3884fe02299c565e1c37ee7ef99293

SHA1
d8e2ef2a52083f6df210109fea53860ea227af9c

SHA256
ae789a65914ed002efb82dad89e5a4d4b9ec8e7faae30d0ed6e3c0d20f7d3858

SHA512
aeb9374a52d0ad99336bfd4ec7bb7c5437b827845b8784d9c21f7d96a931693604689f6adc3ca25fad132a0ad6123013211ff550f427fa86e4f26c122ac6a0fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsoE6A6.tmp

Filesize
10B

MD5
9a53fc1d7126c5e7c81bb5c15b15537b

SHA1
e2d13e0fa37de4c98f30c728210d6afafbb2b000

SHA256
a7de06c22e4e67908840ec3f00ab8fe9e04ae94fb16a74136002afbaf607ff92

SHA512
b0bffbb8072dbdcfc68f0e632f727c08fe3ef936b2ef332c08486553ff2cef7b0bcdb400e421a117e977bb0fac17ce4706a8097e32d558a918433646b6d5f1a1

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstE714.tmp

Filesize
18B

MD5
6658ed40c7550d8486fc23837a8a3fa7

SHA1
7459ab9e2c7db6a2a3150f5371f208fe667f61b1

SHA256
2c358a39ad02f9133b59f28fa48bfef03c631522ff50cdd0dca86c8719baecf1

SHA512
748b3bbbf4e480872db2683c0e5600cfe0f99550f6ed7183be6f03d4ab885b8fbf36805ace1b55187b722a8b6a22acc0e06a7ef0ab41326000cc95cfffeb6eb4

Download Submit
memory/1052-585-0x0000000077B61000-0x0000000077C81000-memory.dmp

Filesize
1.1MB

Download
memory/1052-586-0x0000000077B61000-0x0000000077C81000-memory.dmp

Filesize
1.1MB

Download
memory/1052-587-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/3904-588-0x0000000001A50000-0x0000000004FB1000-memory.dmp

Filesize
53.4MB

Download
memory/3904-589-0x0000000077BE8000-0x0000000077BE9000-memory.dmp

Filesize
4KB

Download
memory/3904-590-0x0000000077C05000-0x0000000077C06000-memory.dmp

Filesize
4KB

Download
memory/3904-604-0x0000000077B61000-0x0000000077C81000-memory.dmp

Filesize
1.1MB

Download
memory/3904-603-0x00000000007F0000-0x0000000001A44000-memory.dmp

Filesize
18.3MB

Download
memory/3904-605-0x0000000001A50000-0x0000000004FB1000-memory.dmp

Filesize
53.4MB

Download
memory/3904-606-0x0000000072A5E000-0x0000000072A5F000-memory.dmp

Filesize
4KB

Download
memory/3904-607-0x00000000007F0000-0x000000000080E000-memory.dmp

Filesize
120KB

Download
memory/3904-608-0x0000000037D00000-0x00000000382A4000-memory.dmp

Filesize
5.6MB

Download
memory/3904-609-0x0000000037C30000-0x0000000037CCC000-memory.dmp

Filesize
624KB

Download
memory/3904-611-0x0000000072A50000-0x0000000073200000-memory.dmp

Filesize
7.7MB

Download
memory/3904-612-0x0000000038680000-0x00000000386D0000-memory.dmp

Filesize
320KB

Download
memory/3904-613-0x00000000387D0000-0x0000000038992000-memory.dmp

Filesize
1.8MB

Download
memory/3904-614-0x0000000038A20000-0x0000000038AB2000-memory.dmp

Filesize
584KB

Download
memory/3904-615-0x0000000038D90000-0x0000000038D9A000-memory.dmp

Filesize
40KB

Download
memory/3904-617-0x0000000072A5E000-0x0000000072A5F000-memory.dmp

Filesize
4KB

Download
memory/3904-618-0x0000000072A50000-0x0000000073200000-memory.dmp

Filesize
7.7MB

Download