MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a007111bc2e22b8f34440012d21d7e265d0c349b9e2b2aa2568397238974ec08. 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


Efimer


Vendor detections: 9


Intelligence 9 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a007111bc2e22b8f34440012d21d7e265d0c349b9e2b2aa2568397238974ec08
SHA3-384 hash: b5a343afd2437f40a0409f27a851f8b3756ee545f4fd84753d46d7e984abab6de88f21665d116e29873bef7ab59b5bf3
SHA1 hash: c6eae2916af4e8603c51e6b27b6e6f8b068284b1
MD5 hash: f64c86017ea3629c645c5695e4dd136b
humanhash: cold-william-seventeen-leopard
File name:default.dat
Download: download sample
Signature Efimer
Create hunting rule
File size:14'337'245 bytes
First seen:2026-07-25 18:52:32 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash dcaf48c1f10b0efa0a4472200f3850ed (657 x Efimer, 60 x BlankGrabber, 23 x SalatStealer)
ssdeep 393216:d4EIFrol2nfRUTzdKWmLg+iXMCHWUjX4cuI3/PGTAI:dGvfRUTld+iXMb8XNH/O7
TLSH T188E6335864D413F8EAF3417CAFE18692E558F8B42736C69F179403A17E232E14D3EA27
TrID 37.0% (.EXE) Win64 Executable (generic) (6522/11/2)
28.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
11.5% (.EXE) OS/2 Executable (generic) (2029/13)
11.3% (.EXE) Generic Win/DOS Executable (2002/3)
11.3% (.EXE) DOS Executable (generic) (2000/1)
Magika pebin
dhash icon e8e864e0d8e8ec5a (9 x Efimer)
Reporter aachum
Tags:ClickFix Efimer exe


Avatar
iamaachum
https://tuasesoriadigital.es/default.dat

Intelligence

File Origin
# of uploads :
1
# of downloads :
178
Origin country :
ES ES
Vendor Threat Intelligence
Malware configuration found for:
PyInstaller
Details
Link:
https://research.acce.ciphertechsolutions.com/results/e98fb32c-0a7f-499c-a315-c49dfd42bd13/
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/76176/
Detection(s):
SecuriteInfo.com.Variant.Dropper.354.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Restart of the analyzed sample
Creating a window
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-debug expand installer-heuristic lolbin masquerade microsoft_visual_cc overlay packed packed packed pyinstaller reconnaissance
Link:
https://www.filescan.io/uploads/6a65062c5af95b68a85d18e3/reports/1a0369f0-1a66-42a9-99e3-18b8d3809ca8/overview
Verdict:
Malicious
Labled as:
Yogi.Generic
Link:
https://www.hybrid-analysis.com/sample/a007111bc2e22b8f34440012d21d7e265d0c349b9e2b2aa2568397238974ec08
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-07-25T16:27:00Z UTC
Last seen:
2026-07-26T18:17:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/a007111bc2e22b8f34440012d21d7e265d0c349b9e2b2aa2568397238974ec08/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/2783ef2b-d9a8-42e3-b81f-51ffcf4b2a3e
Gathering data
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a007111bc2e22b8f34440012d21d7e265d0c349b9e2b2aa2568397238974ec08
Verdict:
inconclusive
YARA:
6 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Win 64 Exe x64
Link:
https://app.malva.re/file/f64c86017ea3629c645c5695e4dd136b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a007111bc2e22b8f34440012d21d7e265d0c349b9e2b2aa2568397238974ec08/
Threat name:
Win64.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2026-07-25 18:53:39 UTC
File Type:
PE+ (Exe)
Extracted files:
482
AV detection:
20 of 38 (52.63%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uadrcg6c4ivy6nceaajnehl6ezoqyne3tyvsviswqolshclu5qea._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
execution pyarmor pyinstaller
Link:
https://tria.ge/reports/260725-xjebxsswdt/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Executes a command shell one-liner
Loads dropped DLL
Command and Scripting Interpreter: PowerShell
Unpacked files
SH256 hash:
a007111bc2e22b8f34440012d21d7e265d0c349b9e2b2aa2568397238974ec08
MD5 hash:
f64c86017ea3629c645c5695e4dd136b
SHA1 hash:
c6eae2916af4e8603c51e6b27b6e6f8b068284b1
Link:
https://www.unpac.me/results/3016f9fc-7e9f-4f46-9d69-a29d2c0b5714/
SH256 hash:
36585912e5eaf83ba9fea0631534f690ccdc2d7ba91537166fe53e56c221e153
MD5 hash:
862f820c3251e4ca6fc0ac00e4092239
SHA1 hash:
ef96d84b253041b090c243594f90938e9a487a9a
Link:
https://www.unpac.me/results/3016f9fc-7e9f-4f46-9d69-a29d2c0b5714/
SH256 hash:
a5c6a329698490a035133433928d04368ce6285bb91a9d074fc285de4c9a32a4
MD5 hash:
16855ebef31c5b1ebe767f1c617645b3
SHA1 hash:
315521f3a748abfa35cd4d48e8dd09d0556d989b
Link:
https://www.unpac.me/results/3016f9fc-7e9f-4f46-9d69-a29d2c0b5714/
SH256 hash:
bc9dd9f5e89611cb7bd18b2204a85b60c99fd5aa9ba418446bd80edf5ab1ffb9
MD5 hash:
4df8cf2d54689d1674b8f71546f024d1
SHA1 hash:
9a5cb42251137d1f76086fa26c1a076a34b84203
Link:
https://www.unpac.me/results/3016f9fc-7e9f-4f46-9d69-a29d2c0b5714/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a007111bc2e22b8f34440012d21d7e265d0c349b9e2b2aa2568397238974ec08

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Detect_PyInstaller
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects PyInstaller compiled executables across platforms
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:PyInstaller
Create hunting rule
Author:@bartblaze
Description:Identifies executable converted using PyInstaller. This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:https://cyfare.net/
Rule name:upxHook
Create hunting rule
Author:@r3dbU7z
Description:Detect artifacts from 'upxHook' - modification of UPX packer
Reference:https://bazaar.abuse.ch/sample/6352be8aa5d8063673aa428c3807228c40505004320232a23d99ebd9ef48478a/

File information

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

Web download

Efimer

Executable exe a007111bc2e22b8f34440012d21d7e265d0c349b9e2b2aa2568397238974ec08

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/76176/
  
URLhaus
https://urlhaus.abuse.ch/url/3864471/

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