MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 59b71cb2c5a14186a5069d7935ebe28486f49b7961bddac0a818a021373a44a3. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


GuLoader


Vendor detections: 9


Intelligence 9 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 59b71cb2c5a14186a5069d7935ebe28486f49b7961bddac0a818a021373a44a3
SHA3-384 hash: a6618da10e8e88683e2312173f997b5b2fc5351ed5e567e4a2b3855da1cbaf2154f92579038f440c218108af230d644f
SHA1 hash: 3b6f1411c4144ac7ced6a22109032eb2d60ee095
MD5 hash: 1d1170890a737e4585bdf0a17fd61606
humanhash: twenty-zulu-green-tennessee
File name:DIEN CHUYEN TIEN_SacomBank-TT 20230421-1191736-80192949.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:425'128 bytes
First seen:2023-04-21 05:23:11 UTC
Last seen:2023-05-13 22:49:51 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 6e7f9a29f2c85394521a08b9f31f6275 (278 x GuLoader, 44 x RemcosRAT, 40 x VIPKeylogger)
ssdeep 6144:VT4Dtk3QcbMpNauUCu46rDogprcChE3++AIuvv7OPjBBOQtRSfqth8cm+HbQ8WcJ:VTh3lqNauSp4Cur9uKPjBskRSfE8cl
Threatray 1'526 similar samples on MalwareBazaar
TLSH T18994237054B06037E6768E3F893B536B9AEBCC1599781E0A53B47F0D3C617D0E94E24A
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter 0xToxin
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2022-11-25T11:27:16Z
Valid to:2025-11-24T11:27:16Z
Serial number: 7d18348a67e2ba79f5a094b264cf2e5027fcc33e
Thumbprint Algorithm:SHA256
Thumbprint: a4080715112d6c2e0bf17b525cb2d19dfb71339312502fcdc0108787220c4523
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
491
Origin country :
IL IL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
DIEN CHUYEN TIEN_SacomBank-TT 20230421-1191736-80192949.exe
Verdict:
Malicious activity
Analysis date:
2023-04-21 08:05:27 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/b5131108-801b-493a-8aa4-c0c480e342df

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/383870/
Detection(s):
SecuriteInfo.com.PUA.VBS.Crypt-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% subdirectories
Сreating synchronization primitives
Delayed reading of the file
Creating a file in the %temp% subdirectories
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/80738/overview
Behaviour
MalwareBazaar
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/64421df37ee5da80cfdfd006/reports/93f21415-42b2-4a17-a10b-ba142dff4d30/overview
Verdict:
Malicious
Labled as:
Win/grayware_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/59b71cb2c5a14186a5069d7935ebe28486f49b7961bddac0a818a021373a44a3
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/6518184c-fcb1-4c95-a817-020e24c2bcca
Result
Threat name:
GuLoader, NanoCore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1218415
Signature
Hides that the sample has been downloaded from the Internet (zone.identifier)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 851361 Sample: DIEN_CHUYEN_TIEN_SacomBank-... Startdate: 21/04/2023 Architecture: WINDOWS Score: 100 52 googlehosted.l.googleusercontent.com 2->52 54 drive.google.com 2->54 56 doc-0o-b4-docs.googleusercontent.com 2->56 64 Snort IDS alert for network traffic 2->64 66 Multi AV Scanner detection for dropped file 2->66 68 Sigma detected: Scheduled temp file as task from temp location 2->68 70 4 other signatures 2->70 9 DIEN_CHUYEN_TIEN_SacomBank-TT_20230421-1191736-80192949.exe 4 36 2->9         started        13 CasPol.exe 4 2->13         started        15 dslmon.exe 4 2->15         started        17 dslmon.exe 3 2->17         started        signatures3 process4 file5 50 C:\Users\user\AppData\Local\...\System.dll, PE32 9->50 dropped 78 Writes to foreign memory regions 9->78 80 Tries to detect Any.run 9->80 19 CasPol.exe 2 25 9->19         started        24 CasPol.exe 9->24         started        26 conhost.exe 13->26         started        28 conhost.exe 15->28         started        30 conhost.exe 17->30         started        signatures6 process7 dnsIp8 58 213.152.161.138, 3672, 49850 GLOBALLAYERNL Netherlands 19->58 60 googlehosted.l.googleusercontent.com 142.250.186.129, 443, 49849 GOOGLEUS United States 19->60 62 drive.google.com 216.58.212.174, 443, 49848 GOOGLEUS United States 19->62 42 C:\Users\user\...\Skoleeksemplernes.exe, PE32 19->42 dropped 44 C:\Users\user\AppData\Roaming\...\run.dat, ISO-8859 19->44 dropped 46 C:\Users\user\AppData\Local\...\tmp2017.tmp, XML 19->46 dropped 48 C:\Program Files (x86)\...\dslmon.exe, PE32 19->48 dropped 72 Tries to detect Any.run 19->72 74 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->74 32 schtasks.exe 1 19->32         started        34 schtasks.exe 1 19->34         started        36 conhost.exe 19->36         started        76 Uses schtasks.exe or at.exe to add and modify task schedules 24->76 file9 signatures10 process11 process12 38 conhost.exe 32->38         started        40 conhost.exe 34->40         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/59b71cb2c5a14186a5069d7935ebe28486f49b7961bddac0a818a021373a44a3/
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=lg3rzmwfufaynjigtv4tl27cqsdpjg3zmg65vqfidcqccnz2isrq._file
Verdict:
unknown
Similar samples:
0a223aa68af0c2af0baabda61d82748629078720a017ef4836f3322a76cb691a
GuLoader
4709918939b87a9c054e217770dc158f33c7446815b548d5dabd4a6b138b61b8
GuLoader
486d5231a35dc4e4cb3417a1353c300298824a9df98890a100c596e7c1186aa5
GuLoader
799cb4b1d385475c155fae6fc0c214b059f191ed06b9229f287a8d9225ba8a21
GuLoader
951049989eb772c71ec4fa9f0685ab45cae755ca5d34cf3089fd791999fafa1c
GuLoader
cf890935581d55d30342de2c71190393c3c03b99258ba7a1e3e3139099ee0b97
GuLoader
cfdcbcca4f75f287d6389cda895571530ddb9a2bbdf54cce52c1c65e969ac0a3
GuLoader
+ 1'516 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore discovery keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/230421-f3ptbsec66/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Checks installed software on the system
Legitimate hosting services abused for malware hosting/C2
Checks QEMU agent file
Loads dropped DLL
NanoCore
Malware Config
C2 Extraction:
213.152.161.138:3672
Unpacked files
SH256 hash:
b7823a15e7b1866ba3d77248f750b66505859d264cfc39d8c8c5e812f8ae4a81
MD5 hash:
a1da6788aeaf78ca4ae1dece8019e49d
SHA1 hash:
d770155e6e9aa69223be198c44a8da26a1756d89
Link:
https://www.unpac.me/results/8a31b60f-44ea-4e3c-939a-5b6e81834a95/
SH256 hash:
59b71cb2c5a14186a5069d7935ebe28486f49b7961bddac0a818a021373a44a3
MD5 hash:
1d1170890a737e4585bdf0a17fd61606
SHA1 hash:
3b6f1411c4144ac7ced6a22109032eb2d60ee095
Link:
https://www.unpac.me/results/8a31b60f-44ea-4e3c-939a-5b6e81834a95/
Malware family:
NanoCore
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/59b71cb2c5a1/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.18
Link:
https://yomi.yoroi.company/submissions/59b71cb2c5a14186a5069d7935ebe28486f49b7961bddac0a818a021373a44a3

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/383870/

Comments