MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3f2c09a0f5ef78464bc15d52f74d898136ad3605fca220c72d5b38599033d3a5. 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: 7


Intelligence 7 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3f2c09a0f5ef78464bc15d52f74d898136ad3605fca220c72d5b38599033d3a5
SHA3-384 hash: ec386ce49e593909660786f6d6a0884d3dba8c07d61776bffdacdd119c0838c08eb87965cf351286a96c220a6d7effee
SHA1 hash: 9fe1231810d204a919dd65e4882fda47b7ee1c86
MD5 hash: 8c42bc8f206edbac56b483ab897588ec
humanhash: north-earth-bakerloo-seven
File name:Justificante de Transferencia.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:622'583 bytes
First seen:2022-07-13 12:09:38 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 5f0c714c36e6cc016b3a1f4bc86559e4 (199 x GuLoader, 14 x Formbook, 4 x AgentTesla)
ssdeep 12288:8sNyl1AS4ziyEOhKxE4zvpEgqz1zFCLCHqj03G3Vq3:8sNycJRKxPzvpVq5w293G3A3
Threatray 3'389 similar samples on MalwareBazaar
TLSH T13DD4DFD1E284DCA5D4173076B93EE831694BAE6F17B8052A236E7D1A367335310BBD0B
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon ecc4a2a296c8b0b8 (9 x GuLoader)
Reporter malwarelabnet
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
1
# of downloads :
249
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/287031/
Detection(s):
SecuriteInfo.com.Malware.Heuristic.1003.26068.30413.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.win.grayware_confidence_70D.22032.598.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file
Creating a file in the %temp% subdirectories
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
buer miuref overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/62ceb69d0b00dfa734ec3b32/reports/9d584e82-7fe4-450c-8494-c1084c83fd88/overview
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:
Malicious
Link:
https://analyze.intezer.com/analyses/05d978fc-54fb-4e76-83ee-cb1ba891e084
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1030151
Signature
C2 URLs / IPs found in malware configuration
May check the online IP address of the machine
Multi AV Scanner detection for submitted file
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)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 662646 Sample: Justificante de Transferencia.exe Startdate: 13/07/2022 Architecture: WINDOWS Score: 96 26 checkip.dyndns.org 2->26 28 checkip.dyndns.com 2->28 30 3 other IPs or domains 2->30 38 Snort IDS alert for network traffic 2->38 40 Multi AV Scanner detection for submitted file 2->40 42 Yara detected GuLoader 2->42 44 3 other signatures 2->44 8 Justificante de Transferencia.exe 5 62 2->8         started        signatures3 process4 file5 18 C:\Users\user\...behaviorgraphPUSwitch_CLI_Wrapper.dll, PE32+ 8->18 dropped 20 C:\...\api-ms-win-crt-process-l1-1-0.dll, PE32 8->20 dropped 22 C:\Users\user\Bereason\...\steam_api.dll, PE32 8->22 dropped 24 2 other files (none is malicious) 8->24 dropped 46 Writes to foreign memory regions 8->46 48 Tries to detect Any.run 8->48 12 CasPol.exe 15 11 8->12         started        signatures6 process7 dnsIp8 32 checkip.dyndns.com 158.101.44.242, 49731, 80 ORACLE-BMC-31898US United States 12->32 34 googlehosted.l.googleusercontent.com 142.250.181.225, 443, 49730 GOOGLEUS United States 12->34 36 drive.google.com 172.217.18.110, 443, 49729 GOOGLEUS United States 12->36 50 Tries to steal Mail credentials (via file / registry access) 12->50 52 Tries to harvest and steal ftp login credentials 12->52 54 Tries to harvest and steal browser information (history, passwords, etc) 12->54 56 Tries to detect Any.run 12->56 16 conhost.exe 12->16         started        signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3f2c09a0f5ef78464bc15d52f74d898136ad3605fca220c72d5b38599033d3a5/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2022-07-13 01:59:00 UTC
File Type:
PE (Exe)
Extracted files:
93
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=h4watihv554ems6blvjpotmjqe3k2nqf7srcbrznlm4ftebt2osq._file
Verdict:
suspicious
Similar samples:
083a3fd47e58d83c6a4265bcb00f93d30cc2901d6637ae9648411e83d3ad5017
GuLoader
121dae49dacf1290b5ef4de577a01161b523d9edf8564fa765e7c00ac6c3b862
GuLoader
2fe1aace85b4bf69778fce02eaba9c3d1a139fd40770d6296d3fd9970efacb18
GuLoader
46328084c6b1d250b46ce080d6426e86753df25bcbd6332b253eb578fa789a5e
GuLoader
4e6a98f49ac2a278d129e4aaf8e8eab4dfe1c7ba0e13aa04dbd7a6952cb1dd2b
GuLoader
61becb2257f95087577ede433ea399f8dceb89ee6733e90c9919523befe3376e
GuLoader
9357b03da4163feee42bc9b5e8c86772bfb73bdd5c8ee546bfad1e8c06f69774
GuLoader
9dea1f77cbe4728bcb0ef4d8678842a4623218e005c4637e462257cce1b0c9f2
GuLoader
9eb7c4ee977f3961ee314e89468f793611fa8c5c95c1f73fdff318b674d6919f
GuLoader
d4deea835f9d1a11d323dc267f8a71f623dbaef0af0492bc9a631cf6293e438b
GuLoader
+ 3'379 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader discovery downloader
Link:
https://tria.ge/reports/220713-pb17qadhbp/
Behaviour
Enumerates physical storage devices
Drops file in Windows directory
Checks installed software on the system
Loads dropped DLL
Guloader,Cloudeye
Unpacked files
SH256 hash:
c7a20bcaa0197aedddc8e4797bbb33fdf70d980f5e83c203d148121c2106d917
MD5 hash:
792b6f86e296d3904285b2bf67ccd7e0
SHA1 hash:
966b16f84697552747e0ddd19a4ba8ab5083af31
Link:
https://www.unpac.me/results/2d85570a-0995-483f-9973-ffe69ec8468b/
SH256 hash:
3f2c09a0f5ef78464bc15d52f74d898136ad3605fca220c72d5b38599033d3a5
MD5 hash:
8c42bc8f206edbac56b483ab897588ec
SHA1 hash:
9fe1231810d204a919dd65e4882fda47b7ee1c86
Link:
https://www.unpac.me/results/2d85570a-0995-483f-9973-ffe69ec8468b/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3f2c09a0f5ef/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.43
Link:
https://yomi.yoroi.company/submissions/3f2c09a0f5ef78464bc15d52f74d898136ad3605fca220c72d5b38599033d3a5

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:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader

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/287031/

Comments