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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f13c3193eeef6dd61da5d1e5e3bbff931aab466b3078912463ebfebae5b43aae. 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: 13


Intelligence 13 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f13c3193eeef6dd61da5d1e5e3bbff931aab466b3078912463ebfebae5b43aae
SHA3-384 hash: ddee38d221993df3ed42de3d16acf0a43605dd00c88ea6e1ad71e2237107cbcb57f3c6f506f9773f10d55d8a1f676fdf
SHA1 hash: a2e4db63f1e9f6b04646d8070e99d6f0b1565ff1
MD5 hash: c3c1de87e3e0c2f6b94d37b9a527130a
humanhash: stream-red-idaho-arkansas
File name:GA180422VIMEKSIM_pdf.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:1'168'736 bytes
First seen:2025-10-20 09:26:37 UTC
Last seen:2025-11-06 10:37:58 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b34f154ec913d2d2c435cbd644e91687 (592 x GuLoader, 130 x RemcosRAT, 84 x EpsilonStealer)
ssdeep 24576:2Bmva2dcu79NmSaz2VtiIdiELGGd6Bp0xjs+9uI+wrUrFd2CCcI5HFEllsT:rSycmvvtiIibqfsf1wiFddI5HFmA
Threatray 2'102 similar samples on MalwareBazaar
TLSH T1A14523826F71D5A7DC725A30CD728AB957D92C153299022753B03F8FFD262D28F4836A
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10522/11/4)
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) (4504/4/1)
Magika pebin
dhash icon ccccaad46931b294 (5 x GuLoader, 2 x RemcosRAT)
Reporter lowmal3
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Kdgryderne
Issuer:Kdgryderne
Algorithm:sha256WithRSAEncryption
Valid from:2025-10-03T09:46:21Z
Valid to:2026-10-03T09:46:21Z
Serial number: 1da9c39870be6167a5d17b284111ece0583d16c0
Thumbprint Algorithm:SHA256
Thumbprint: cdbf595ebfc8683fdf869fc3d62e71322495d805866318045390e83016504b01
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
214
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
29e4f768c5075dcdb2d043cae955f2cb549622a8061bf38c8a0fd494af981cc8.zip
Verdict:
Malicious activity
Analysis date:
2025-10-20 09:26:57 UTC
Tags:
arch-exec rat remcos guloader
Link:
https://app.any.run/tasks/489d172f-7ea3-4337-b2a4-b6a935e5becd

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/33410/
Verdict:
Malicious
Score:
95.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68f60061c949ca4fcbe39ce7
Tags:
underscore nsis
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% directory
Searching for the window
Delayed reading of the file
Creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context installer masquerade microsoft_visual_cc obfuscated overlay remcos signed
Link:
https://www.filescan.io/uploads/68f6009011ff3db29f644e4b/reports/6dbdc536-1a1f-4898-9eba-d157efe98397/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/f13c3193eeef6dd61da5d1e5e3bbff931aab466b3078912463ebfebae5b43aae
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-10-14T20:47:00Z UTC
Last seen:
2025-10-22T07:11:00Z UTC
Hits:
~1000
Detections:
Backdoor.Remcos.HTTP.C&C Trojan-Downloader.Win32.Minix.sb Trojan.Win32.Guloader.sb Trojan.NSIS.Makoob.sba HEUR:Trojan-Downloader.Win32.Minix.gen HEUR:Backdoor.Win32.Remcos.gen VHO:Backdoor.Win32.Remcos.gen
Link:
https://opentip.kaspersky.com/f13c3193eeef6dd61da5d1e5e3bbff931aab466b3078912463ebfebae5b43aae/results?tab=lookup
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/a8067446-1408-4cb8-81dc-28e77960061e
Result
Threat name:
GuLoader, Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1798196
Signature
AI detected suspicious PE digital signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Connects to many ports of the same IP (likely port scanning)
Detected Remcos RAT
Found malware configuration
Initial sample is a PE file and has a suspicious name
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Yara detected GuLoader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
Score:
96%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f13c3193eeef6dd61da5d1e5e3bbff931aab466b3078912463ebfebae5b43aae
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) PE File Layout Win 32 Exe x86
Link:
https://app.malva.re/file/c3c1de87e3e0c2f6b94d37b9a527130a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f13c3193eeef6dd61da5d1e5e3bbff931aab466b3078912463ebfebae5b43aae/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2025-10-15 00:01:44 UTC
File Type:
PE (Exe)
Extracted files:
41
AV detection:
21 of 36 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6e6dde7o55w5mhnf2hs6ho77smnkwrtlgb4jcjdd5p7lvznuhkxa._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
1ba170ab165a3a134d7328c275ca25cbabc37eaf2779c8cb04de4b4d9a42d3fb
GuLoader
551863be2e92aa2d319a92cda72bc2123233ee3a7e965ee691fd70d88c21d772
GuLoader
5dfcdc1c491fbf2f7f2fbac6bbf27b84be652583b66b252c46e8ed86577c3c60
GuLoader
658e1034df7e4b35e11fb4403be312fa834bccce8c381b81b6623dfc26a9a2cf
GuLoader
67fd31f9b85ca5e31e0851c8a5f8f2f36343d884aa3dd7f26d4aa6c5d02b28fe
GuLoader
714aa4f8bd5e0cd65d45818cee8ea169ae1fbe0bc274a5a39ef68a8803528ad5
GuLoader
806c54f6774b7fd87697f35797bf146b7b72367c5ccb17ed21e10de5cb7d9020
GuLoader
c3a6aaba899b23d82c2a243053ddb261d41690d3a3fcd43804c0f5d384c60800
GuLoader
d53216f23d69d7a9f00573de088d0ea3517fefdecf1f27a78d11b7db00c89de8
GuLoader
dd6d8363c2761f77948a54be192dbbe563d2da9dd8f922102547631ccbd05ebb
GuLoader
error
GuLoader
+ 2'092 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:guloader family:remcos botnet:remotehost discovery downloader rat
Link:
https://tria.ge/reports/251020-le4kgahk5w/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Legitimate hosting services abused for malware hosting/C2
Loads dropped DLL
Guloader family
Guloader,Cloudeye
Remcos
Remcos family
Malware Config
C2 Extraction:
127.0.0.1:45109
196.251.115.65:45109
5932ec3f-83d8-43b6.duckdns.org:45109
Unpacked files
SH256 hash:
f13c3193eeef6dd61da5d1e5e3bbff931aab466b3078912463ebfebae5b43aae
MD5 hash:
c3c1de87e3e0c2f6b94d37b9a527130a
SHA1 hash:
a2e4db63f1e9f6b04646d8070e99d6f0b1565ff1
Link:
https://www.unpac.me/results/bbffe0cc-d6bc-4433-835a-ab14b5303eb9/
SH256 hash:
1e40211af65923c2f4fd02ce021458a7745d28e2f383835e3015e96575632172
MD5 hash:
466179e1c8ee8a1ff5e4427dbb6c4a01
SHA1 hash:
eb607467009074278e4bd50c7eab400e95ae48f7
Link:
https://www.unpac.me/results/bbffe0cc-d6bc-4433-835a-ab14b5303eb9/
SH256 hash:
3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
MD5 hash:
0d7ad4f45dc6f5aa87f606d0331c6901
SHA1 hash:
48df0911f0484cbe2a8cdd5362140b63c41ee457
Link:
https://www.unpac.me/results/bbffe0cc-d6bc-4433-835a-ab14b5303eb9/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.52
Link:
https://yomi.yoroi.company/submissions/f13c3193eeef6dd61da5d1e5e3bbff931aab466b3078912463ebfebae5b43aae

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:Detect_NSIS_Nullsoft_Installer
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects NSIS installers by .ndata section + NSIS header string
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.

Malspam

GuLoader

Executable exe f13c3193eeef6dd61da5d1e5e3bbff931aab466b3078912463ebfebae5b43aae

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/33410/

Comments