guloader | d6d3e11dece00e76f60d74fb2c117ae261c961fbb37030fc8d6ad748510914ae

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-10-2024 13:48

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General

Target

PO-94858.exe
Size

876KB
MD5

efeb7d261da3f778abf002c69a971eb8
SHA1

f4e570bf56015da2c76faac8dc8f28a7e3a3d8a3
SHA256

cf2afee6c1871706deb922c7105c9e5bf6a2bbaca312b1b4ec4951dcfa033ea7
SHA512

5cbcd6b9b06f63019e9c00e47e4bee071079e81792ea8cd6173d4f544c15b852090f38e3a642dbc51dd357068634a4b769098204f9f409119a3675eb4d98487e
SSDEEP

24576:sw5i21T5xhInKT/Y2ol8tdi817TWdg0F7RR:sV017TWSyR

Score

10^/10

guloader vipkeylogger collection discovery downloader keylogger spyware stealer

Malware Config

Extracted

Family

vipkeylogger

Credentials

Protocol: smtp
Host:
hosting1.ro.hostsailor.com
Port:
587
Username:
[email protected]
Password:
7213575aceACE@@
Email To:
[email protected]

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader
VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
stealer keylogger vipkeylogger

Loads dropped DLL 2 IoCs

pid	Process
1028	PO-94858.exe
1028	PO-94858.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-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO-94858.exe
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO-94858.exe
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO-94858.exe

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
29	checkip.dyndns.org

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1412	PO-94858.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1028	PO-94858.exe
1412	PO-94858.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1028 set thread context of 1412	1028	PO-94858.exe	95

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\Dicer\Tabitta.ini	PO-94858.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

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	PO-94858.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PO-94858.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1412	PO-94858.exe
1412	PO-94858.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1028	PO-94858.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1412	PO-94858.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1028 wrote to memory of 1412	1028	PO-94858.exe	95
PID 1028 wrote to memory of 1412	1028	PO-94858.exe	95
PID 1028 wrote to memory of 1412	1028	PO-94858.exe	95
PID 1028 wrote to memory of 1412	1028	PO-94858.exe	95
PID 1028 wrote to memory of 1412	1028	PO-94858.exe	95

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO-94858.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO-94858.exe

C:\Users\Admin\AppData\Local\Temp\PO-94858.exe
"C:\Users\Admin\AppData\Local\Temp\PO-94858.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1028
- C:\Users\Admin\AppData\Local\Temp\PO-94858.exe
  "C:\Users\Admin\AppData\Local\Temp\PO-94858.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
  - outlook_office_path
  - outlook_win_path
  PID:1412

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

Browser Information Discovery

T1217

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

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsgC8D3.tmp

Filesize
4B

MD5
cde63b34c142af0a38cbe83791c964f8

SHA1
ece2b194b486118b40ad12c1f0e9425dd0672424

SHA256
65e2d70166c9a802b7ad2a87129b8945f083e5f268878790a9d1f1c03f47938d

SHA512
0559d3d34ad64ccc27e685431c24fc6ead0f645db14fa0e125a64fb67dbd158c15432c1fc5407811aac8a3486090dfbcfcbc3c6bf5aa0ec73f979ef62d14853c

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsgC922.tmp

Filesize
7B

MD5
9569f680da3f887d04664e48682de964

SHA1
e436acf7a9432b525a4825560eb37a19ab983f3d

SHA256
ca101d01b0317ffc547b0030192d53167e00177324815d73411d961681466de7

SHA512
315340726e5fd412f79415d444db7748b3f77bde3de09b0dd5b3f7e7c1cdf4e0baa7990562666e878fbea48330edae83926620a93aaec0645b5b0f4dd219eeac

Download Submit
C:\Users\Admin\AppData\Local\Temp\nslC853.tmp\System.dll

Filesize
11KB

MD5
4d3b19a81bd51f8ce44b93643a4e3a99

SHA1
35f8b00e85577b014080df98bd2c378351d9b3e9

SHA256
fda0018ab182ac6025d2fc9a2efcce3745d1da21ce5141859f8286cf319a52ce

SHA512
b2ba9c961c0e1617f802990587a9000979ab5cc493ae2f8ca852eb43eeaf24916b0b29057dbff7d41a1797dfb2dce3db41990e8639b8f205771dbec3fd80f622

Download Submit
C:\Users\Admin\AppData\Local\Temp\nslC854.tmp

Filesize
5B

MD5
e2fecc970546c3418917879fe354826c

SHA1
63f1c1dd01b87704a6b6c99fd9f141e0a3064f16

SHA256
ff91566d755f5d038ae698a2cc0a7d4d14e5273afafc37b6f03afda163768fa0

SHA512
3c4a68cbaee94f986515f43305a0e7620c14c30213d4a17db4a3e8a1b996764eb688bf733f472fc52073c2c80bb5229bb29411d7601aefe1c4370e230c341a0a

Download Submit
C:\Users\Admin\AppData\Local\Temp\nslC854.tmp

Filesize
9B

MD5
2b3884fe02299c565e1c37ee7ef99293

SHA1
d8e2ef2a52083f6df210109fea53860ea227af9c

SHA256
ae789a65914ed002efb82dad89e5a4d4b9ec8e7faae30d0ed6e3c0d20f7d3858

SHA512
aeb9374a52d0ad99336bfd4ec7bb7c5437b827845b8784d9c21f7d96a931693604689f6adc3ca25fad132a0ad6123013211ff550f427fa86e4f26c122ac6a0fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nslC854.tmp

Filesize
35B

MD5
baf2a3b161f59f08e4ac15360a33f91e

SHA1
7720d461221d6947de0c8295c9a350de7793e0e2

SHA256
8c876ae7916572fa02c0c9841d47358f549363bda4f2879944e44c250f29e431

SHA512
b9ff3c4e06b93e7896a44bbcc4f228e6bed9afc14d4996bb5953851157773882d576826df5d1b9b2000356d69c3a43a61186f88027c4c9914e7aca8a93aa357f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nslC854.tmp

Filesize
48B

MD5
040cc34b899dd5230d5113b5156ec5d4

SHA1
60a49c8b3e3f33b38c1780e8826e50d9672c5bcf

SHA256
454a97bbcd88c00fd8617e38fec2ebc855a608adbb751ad5ce4355f6bd171c32

SHA512
e6d441445f20c73e6e23203323dd5ff68ac2a74767fa69aac7c2c1b05e7bd981cf461b66c9d516dc53b4bbc32117c12e103187cfca891846b9d42ee2aa2c423d

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsqC7D5.tmp

Filesize
49B

MD5
3dde622512d2f3586cb4427fedc984aa

SHA1
dd215ea7d405c19b0684575c189d1d18e6eb6048

SHA256
cb99a0cd928dce16f9350bc06ffc210f3f34c9928a05771227b19f18280ee24e

SHA512
d3c95653af8bab34dc9cb60dbed8e667a2813103af898a1a4cb477162779ba254a99d623e7a6ceaaafa699b34e59c7939b830b26d154d3c52cce7af32dfa2821

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsqC7D5.tmp

Filesize
59B

MD5
42d9107b0a7dcefc04b2f720704232c6

SHA1
c1d191f3c1f96b4d587f76a5335bd52a53521748

SHA256
5745e24f1d2217560ffd59274adb500eb2b350a3fcc86cda4e6181fbe4f96ece

SHA512
9b2d770cccc6966625fc63e6c8eb4410a35d656710494851ab4f5f6e94427819b1197370b54be88ad1f4fed76fe7a005e03314a87e69d6876940c8c0eacc5904

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsqC7D5.tmp

Filesize
70B

MD5
f603843c4b1146c576a2c9e0826de265

SHA1
5de71ba33c20cfb74c19c706a4a44706d78fb102

SHA256
ada9d1ffc0e78d2e2c05290b4ba1b1b04bc9c97a8f8e084ae0d49e36a9bb9c0c

SHA512
7a5a8ebc1c12193783ae711eb4716c1a2e52d1c4799dcd7f2a29924c246b1c665f456de3eaffd5e9cd7f42e788009e2798d1121c8d695698c86349bff17d5e8a

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsqC7D5.tmp

Filesize
71B

MD5
fa03f87568cc498e445851fdc25e6650

SHA1
0e22fbef177db71831aad63f1185f3886a0e440a

SHA256
70575dfd32af5bdea9244096f613f64ddbed3f1ccab2f30764bbfe47f01f3c3c

SHA512
1d2ebe36663d54525c0980cc36f967c584e3849b8dd6e77f0092157879b1ebdbed1d0e50f08c41365cca356dca3df41f21f7725fe1665d5ffd7826ff5b1fa5be

Download Submit
C:\Users\Admin\AppData\Local\Temp\nswC894.tmp

Filesize
2B

MD5
25bc6654798eb508fa0b6343212a74fe

SHA1
15d5e1d3b948fd5986aaff7d9419b5e52c75fc93

SHA256
8e5202705183bd3a20a29e224499b0f77a8273ee33cd93cca71043c57ad4bdfc

SHA512
5868c6241ed3cfcc5c34bfe42e4b9f5c69e74975e524771d8c9f35cafc13fd01cd943ec4d8caefee79a1f4a457e69d20b7a86f88db83a5bc3e6bd8a619972898

Download Submit
C:\Users\Admin\AppData\Local\Temp\nswC894.tmp

Filesize
3B

MD5
4e27f2226785e9abbe046fc592668860

SHA1
28b18a7f383131df509f7191f946a32c5a2e410c

SHA256
01a219245e1501fee01ce0baea8f6065ce5162cea12fa570689a07c9717be81d

SHA512
2a23585835bdb5db8175cab265566042282841efdcee8aaba8b9b5d466b0f165c0c5973033ce94bb9a8f07a956689247981ea07ac5a51408263e1653d9710adb

Download Submit
C:\Users\Admin\AppData\Local\Temp\nswC894.tmp

Filesize
6B

MD5
50484c19f1afdaf3841a0d821ed393d2

SHA1
c65a0fb7e74ffd2c9fc3a0f9aacb0f6a24b0a68b

SHA256
6923dd1bc0460082c5d55a831908c24a282860b7f1cd6c2b79cf1bc8857c639c

SHA512
d51a20d67571fe70bcd6c36e1382a3c342f42671c710090b75fcfc2405ce24488e03a7131eefe4751d0bd3aeaad816605ad10c8e3258d72fcf379e32416cbf3b

Download Submit
C:\Users\Admin\AppData\Local\Temp\nswC894.tmp

Filesize
8B

MD5
c3cb69218b85c3260387fb582cb518dd

SHA1
961c892ded09a4cbb5392097bb845ccba65902ad

SHA256
1c329924865741e0222d3ead23072cfbed14f96e2b0432573068eb0640513101

SHA512
2402fffeb89c531db742bf6f5466eee8fe13edf97b8ecfc2cace3522806b322924d1ca81dda25e59b4047b8f40ad11ae9216e0a0d5c7fc6beef4368eb9551422

Download Submit
C:\Users\Admin\AppData\Local\Temp\nswC894.tmp

Filesize
10B

MD5
9a53fc1d7126c5e7c81bb5c15b15537b

SHA1
e2d13e0fa37de4c98f30c728210d6afafbb2b000

SHA256
a7de06c22e4e67908840ec3f00ab8fe9e04ae94fb16a74136002afbaf607ff92

SHA512
b0bffbb8072dbdcfc68f0e632f727c08fe3ef936b2ef332c08486553ff2cef7b0bcdb400e421a117e977bb0fac17ce4706a8097e32d558a918433646b6d5f1a1

Download Submit
memory/1028-566-0x0000000004990000-0x00000000065DA000-memory.dmp

Filesize
28.3MB

Download
memory/1028-567-0x0000000077961000-0x0000000077A81000-memory.dmp

Filesize
1.1MB

Download
memory/1028-568-0x0000000004990000-0x00000000065DA000-memory.dmp

Filesize
28.3MB

Download
memory/1028-569-0x0000000010004000-0x0000000010005000-memory.dmp

Filesize
4KB

Download
memory/1028-570-0x0000000004990000-0x00000000065DA000-memory.dmp

Filesize
28.3MB

Download
memory/1412-571-0x00000000016F0000-0x000000000333A000-memory.dmp

Filesize
28.3MB

Download
memory/1412-572-0x00000000779E8000-0x00000000779E9000-memory.dmp

Filesize
4KB

Download
memory/1412-573-0x00000000016F0000-0x000000000333A000-memory.dmp

Filesize
28.3MB

Download
memory/1412-574-0x0000000077A05000-0x0000000077A06000-memory.dmp

Filesize
4KB

Download
memory/1412-575-0x0000000000490000-0x00000000016E4000-memory.dmp

Filesize
18.3MB

Download
memory/1412-576-0x0000000000490000-0x00000000004D8000-memory.dmp

Filesize
288KB

Download
memory/1412-577-0x0000000035CA0000-0x0000000036244000-memory.dmp

Filesize
5.6MB

Download
memory/1412-578-0x0000000035B30000-0x0000000035BCC000-memory.dmp

Filesize
624KB

Download
memory/1412-580-0x0000000077961000-0x0000000077A81000-memory.dmp

Filesize
1.1MB

Download
memory/1412-582-0x0000000036990000-0x0000000036B52000-memory.dmp

Filesize
1.8MB

Download
memory/1412-583-0x0000000036B60000-0x0000000036BB0000-memory.dmp

Filesize
320KB

Download
memory/1412-584-0x0000000036C20000-0x0000000036CB2000-memory.dmp

Filesize
584KB

Download
memory/1412-585-0x0000000036D10000-0x0000000036D1A000-memory.dmp

Filesize
40KB

Download