MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4c5c4d61cf21e2f139dd12706f1996928a2f420d2161b6402564fe640bd94f4f. 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: 11


Intelligence 11 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4c5c4d61cf21e2f139dd12706f1996928a2f420d2161b6402564fe640bd94f4f
SHA3-384 hash: adc5c157092efd20f2997569f1b31f97ccd5c6955175f86af09f5d85b6982f70e47713e81ffa57454437268697cb4252
SHA1 hash: 0697833cd5ae4344a43d3822abe9d1846fbbe99b
MD5 hash: 511d8d6c67bfe37a8bda71d05e56782a
humanhash: september-white-helium-arkansas
File name:SecuriteInfo.com.Gen.Variant.Nemesis.10341.18723.4429
Download: download sample
Signature GuLoader
Create hunting rule
File size:343'240 bytes
First seen:2022-08-30 16:34:08 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 3abe302b6d9a1256e6a915429af4ffd2 (277 x GuLoader, 38 x Formbook, 25 x Loki)
ssdeep 6144:qa4TbMMMMMDpMMMM3lMMMM31UqaOKz06/ZMRLwvITTEvPQm3heCCHtnKrWz7kIqh:34XMMMMMdMMMMVMMMMlUxbwyZMRLwvs6
Threatray 13'987 similar samples on MalwareBazaar
TLSH T1F87401067751E652D89D0F3045B28EA61EBCBD24B8B1800F37A0BBCE7F726D3991A157
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 fc9494a4b4f4dce0 (8 x Loki, 1 x GuLoader)
Reporter SecuriteInfoCom
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Kuvertpriserne Modstilling
Issuer:Kuvertpriserne Modstilling
Algorithm:sha256WithRSAEncryption
Valid from:2021-09-14T17:41:58Z
Valid to:2024-09-13T17:41:58Z
Serial number: -06f83b4c6ef78361
Thumbprint Algorithm:SHA256
Thumbprint: adc38ba8b3f4858b4c9eb835af49d58f002e5ec86bba2660170b09de37584a5b
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
285
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SecuriteInfo.com.Gen.Variant.Nemesis.10341.18723.4429
Verdict:
Malicious activity
Analysis date:
2022-08-30 16:37:16 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/4b7f241a-ab5c-4ae3-8c8d-f2f7c6096e29

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/302612/
Detection(s):
SecuriteInfo.com.Gen.Variant.Nemesis.10341.18723.4429.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% subdirectories
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/30884/overview
Behaviour
MalwareBazaar
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
buer overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/630e3c895b45ec20ccd9c57f/reports/61db3cce-da32-436b-b1a9-17fe884f6e67/overview
Result
Verdict:
MALICIOUS
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/d21886c5-6cf8-4ab3-a5cc-90ac90b350f8
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1060670
Signature
Antivirus detection for URL or domain
Multi AV Scanner detection for domain / URL
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 harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 693195 Sample: SecuriteInfo.com.Gen.Varian... Startdate: 30/08/2022 Architecture: WINDOWS Score: 100 24 googlehosted.l.googleusercontent.com 2->24 26 drive.google.com 2->26 28 doc-08-7o-docs.googleusercontent.com 2->28 36 Snort IDS alert for network traffic 2->36 38 Multi AV Scanner detection for domain / URL 2->38 40 Antivirus detection for URL or domain 2->40 42 3 other signatures 2->42 8 SecuriteInfo.com.Gen.Variant.Nemesis.10341.18723.4429.exe 1 47 2->8         started        signatures3 process4 file5 18 C:\Users\user\AppData\...\AsUserLaunch.exe, PE32+ 8->18 dropped 20 C:\Users\user\AppData\Local\...\System.dll, PE32 8->20 dropped 22 C:\Users\user\AppData\Local\Temp\...\Math.dll, PE32 8->22 dropped 44 Tries to detect Any.run 8->44 12 SecuriteInfo.com.Gen.Variant.Nemesis.10341.18723.4429.exe 21 8->12         started        signatures6 process7 dnsIp8 30 162.213.249.190, 49776, 80 NAMECHEAP-NETUS United States 12->30 32 drive.google.com 142.250.185.110, 443, 49774 GOOGLEUS United States 12->32 34 googlehosted.l.googleusercontent.com 142.250.186.161, 443, 49775 GOOGLEUS United States 12->34 46 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->46 48 Tries to steal Mail credentials (via file / registry access) 12->48 50 Tries to harvest and steal ftp login credentials 12->50 52 2 other signatures 12->52 16 WerFault.exe 2 12->16         started        signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4c5c4d61cf21e2f139dd12706f1996928a2f420d2161b6402564fe640bd94f4f/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2022-08-30 08:03:58 UTC
File Type:
PE (Exe)
Extracted files:
13
AV detection:
13 of 40 (32.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jroe2yopehrpcoo5cjyg6gmwskfc6qqnefq3mqbfmt7gic6zj5hq._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
1eda178f7d1d7e718231dcdb124f55109aae03d6fe7583fc5c1e8cae4d6c65bd
GuLoader
5b44d377e2ac43e289acf6f2ce0c3062955c523886c79f4235317535a563ec9c
GuLoader
6d4d55abaccc1b19903ceb6c96d760327bb9c87a744a8806bfb242d547c9e6e3
GuLoader
939128fc3b36897c4e269b77c910f6ffbb9aafd7a33a97ba4394f949d16deb97
GuLoader
9d38f9ec73984b7fafcead3842ed5fe3920574f5d93cec8b4e4bb7dcd124662b
GuLoader
ac3492d6010c7164033f3460ab9ec0585a077cfdf97ec96f696bda4cd5ebae56
GuLoader
c017347ca2329b74ae1d8fe7adc174f9812499ef672516e1141123827f640eea
GuLoader
c8b9df067d8ce54ce2c376ad20bd6130dc1f3d4feac573da798e68a202b2ef6f
GuLoader
daf4c0820c45f6be84cf248504e10bfee063ea6fc8de3b397adaa6682e4bb610
GuLoader
df06ee14dcd8d18eae4a818033bd9c3a2971adcf7c0fe9a2ee563a95e975286f
GuLoader
+ 13'977 additional samples on MalwareBazaar
Result
Malware family:
lokibot
Create hunting rule
Score:
  10/10
Tags:
family:guloader family:lokibot collection downloader spyware stealer trojan
Link:
https://tria.ge/reports/220830-t25p2sbfdk/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Program crash
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Legitimate hosting services abused for malware hosting/C2
Checks QEMU agent file
Loads dropped DLL
Reads user/profile data of web browsers
Guloader,Cloudeye
Lokibot
Unpacked files
SH256 hash:
a0cac4cf4852895619bc7743ebeb89f9e4927ccdb9e66b1bcd92a4136d0f9c77
MD5 hash:
b0c77267f13b2f87c084fd86ef51ccfc
SHA1 hash:
f7543f9e9b4f04386dfbf33c38cbed1bf205afb3
Link:
https://www.unpac.me/results/ca8f19eb-db8b-4692-9665-9100b1f12324/
SH256 hash:
06582605b3ecdc58aecf24c24e38b639527784d1aa2148d04802eab6cc674360
MD5 hash:
1724a538245e959d0134083eee3a5b8f
SHA1 hash:
e4e4456787cc1f40bfbe48157377117e194bc5c9
Link:
https://www.unpac.me/results/ca8f19eb-db8b-4692-9665-9100b1f12324/
SH256 hash:
4c5c4d61cf21e2f139dd12706f1996928a2f420d2161b6402564fe640bd94f4f
MD5 hash:
511d8d6c67bfe37a8bda71d05e56782a
SHA1 hash:
0697833cd5ae4344a43d3822abe9d1846fbbe99b
Link:
https://www.unpac.me/results/ca8f19eb-db8b-4692-9665-9100b1f12324/
Malware family:
Lokibot
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4c5c4d61cf21/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/4c5c4d61cf21e2f139dd12706f1996928a2f420d2161b6402564fe640bd94f4f

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/302612/

Comments