MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ac1f084845ff5e15e2e7748d5ca4ebfc36334b62e02d51d1ddb17c8fcf7bb210. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ac1f084845ff5e15e2e7748d5ca4ebfc36334b62e02d51d1ddb17c8fcf7bb210
SHA3-384 hash: 13997e5eb4a8b61ae3d13e1b8901e87c960aeb10810159d0b246c342bb4b90517febe964e74243881d7a6bcfd9868d27
SHA1 hash: f057c06f09156ef454c646b2e454fc8aa8435410
MD5 hash: ecf8e029b99d9f02e256b2014525b4ef
humanhash: alanine-beer-idaho-michigan
File name:Group_invitation.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:319'342 bytes
First seen:2022-10-29 02:23:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1f23f452093b5c1ff091a2f9fb4fa3e9 (274 x GuLoader, 36 x RemcosRAT, 23 x AgentTesla)
ssdeep 6144:Vp+ggZku2D5fjqLp55DYUfzjRKNsRYaaY11Xz:Liku1pPRfMsmYbXz
Threatray 3'214 similar samples on MalwareBazaar
TLSH T13164E092965045E6ED740B3298378DAA15677E35BDB0F60F5B29B5362F332C3812EA03
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 70382f782606001d (1 x GuLoader)
Reporter GovCERT_CH
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
1
# of downloads :
644
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
guloader
Create hunting rule
ID:
1
File name:
Group_invitation.exe
Verdict:
Malicious activity
Analysis date:
2022-10-29 02:23:41 UTC
Tags:
guloader
Link:
https://app.any.run/tasks/798cc136-8f8f-4f34-819f-4cb6faf92a40

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/325709/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.63104626.11210.16906.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Creating a file
Creating a file in the %AppData% subdirectories
Sending a custom TCP request
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/46494/overview
Behaviour
MalwareBazaar
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/635c8ec3b8952e91d3d22dd7/reports/b5e6e668-4f46-4609-bf65-8ba5126aee39/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/0d8770b1-92e8-480c-bd1e-286979e86b81
Result
Threat name:
FormBook, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1100729
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for domain / URL
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect Any.run
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 733390 Sample: Group_invitation.exe Startdate: 29/10/2022 Architecture: WINDOWS Score: 100 31 www.vapes-shop.com 2->31 33 www.twuzzthenight.com 2->33 35 22 other IPs or domains 2->35 55 Snort IDS alert for network traffic 2->55 57 Multi AV Scanner detection for domain / URL 2->57 59 Malicious sample detected (through community Yara rule) 2->59 61 5 other signatures 2->61 9 Group_invitation.exe 1 31 2->9         started        signatures3 process4 file5 27 C:\Users\user\AppData\...\lang-1050.dll, PE32 9->27 dropped 29 C:\Users\user\AppData\Local\...\System.dll, PE32 9->29 dropped 63 Tries to detect Any.run 9->63 13 Group_invitation.exe 6 9->13         started        signatures6 process7 dnsIp8 43 vonhong.com 144.34.191.150, 49801, 80 IT7NETCA Canada 13->43 65 Modifies the context of a thread in another process (thread injection) 13->65 67 Tries to detect Any.run 13->67 69 Maps a DLL or memory area into another process 13->69 71 2 other signatures 13->71 17 wlanext.exe 13 13->17         started        20 explorer.exe 1 13->20 injected 23 RAVCpl64.exe 13->23 injected signatures9 process10 dnsIp11 45 Tries to steal Mail credentials (via file / registry access) 17->45 47 Tries to harvest and steal browser information (history, passwords, etc) 17->47 49 Writes to foreign memory regions 17->49 53 3 other signatures 17->53 25 firefox.exe 17->25         started        37 www.e8a36zg.xyz 154.213.29.16, 49869, 49870, 49871 YISUCLOUDLTD-AS-APYISUCLOUDLTDHK Seychelles 20->37 39 www.greviso.com 103.104.123.42, 49846, 49849, 49850 VNDATA-AS-VNVietStorageTechnologyJointStockCompanyVN Viet Nam 20->39 41 14 other IPs or domains 20->41 51 System process connects to network (likely due to code injection or exploit) 20->51 signatures12 process13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ac1f084845ff5e15e2e7748d5ca4ebfc36334b62e02d51d1ddb17c8fcf7bb210/
Threat name:
Win32.Dropper.Nemesis
Create hunting rule
Status:
Malicious
First seen:
2022-10-25 07:32:47 UTC
File Type:
PE (Exe)
Extracted files:
5
AV detection:
4 of 42 (9.52%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vqpqqscf75pblyxhosgvzjhl7q3dgs3c4awvduo5wf6i7t33wiia._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
2e644ef57ac147bc5283cc5192792a3a396c68f62c8c90ce870e0eea276430ea
GuLoader
60952b7b0b3edeb47b07f1d2a0fb87856b165550e47c605c4ef4fb1da699a332
GuLoader
6b1df4cb218093a57a5646f0d6ece41d548fae6cce51d90d1540686d747069b6
GuLoader
9fff2ab375e26431e4cd6f35aa3b1446a4cba8ec78d0bd61bde694ee6474ded4
GuLoader
a89c531ad157965de03cf15ab2783f0b24e6db0981556a7bf5ad8fe5c7d66ef5
GuLoader
b5bcbfe8ba02879ac963d4f9ed48203c934e80edb58b814129ad836544f2c3a3
GuLoader
b689885667b1f8a29bafedff5fc69526534732ebb7731d98bbc06f7005b245d5
GuLoader
d87e7752ee36b46b902d88317b5c5b172927760a4f171c95f812991ec62ae963
GuLoader
ed20ff85f5df587140e0780e16a5eb28df94e1b6330c8256de39d94b5a772e83
GuLoader
f857890d674a9d4abd8ef6d735c7c03eef0a75777c64cb4a62917d12b68dcbfa
GuLoader
+ 3'204 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/221029-cvpxksgga7/
Behaviour
Enumerates physical storage devices
Drops file in System32 directory
Loads dropped DLL
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/ad5eba58-187f-4001-8007-15b1297ee90f
Unpacked files
SH256 hash:
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7
MD5 hash:
75ed96254fbf894e42058062b4b4f0d1
SHA1 hash:
996503f1383b49021eb3427bc28d13b5bbd11977
Link:
https://www.unpac.me/results/4a6e0c8e-3c85-4d1d-8137-17093b6b0433/
SH256 hash:
ac1f084845ff5e15e2e7748d5ca4ebfc36334b62e02d51d1ddb17c8fcf7bb210
MD5 hash:
ecf8e029b99d9f02e256b2014525b4ef
SHA1 hash:
f057c06f09156ef454c646b2e454fc8aa8435410
Link:
https://www.unpac.me/results/4a6e0c8e-3c85-4d1d-8137-17093b6b0433/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.28
Link:
https://yomi.yoroi.company/submissions/ac1f084845ff5e15e2e7748d5ca4ebfc36334b62e02d51d1ddb17c8fcf7bb210

File information

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

Malspam

GuLoader

Executable exe ac1f084845ff5e15e2e7748d5ca4ebfc36334b62e02d51d1ddb17c8fcf7bb210

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/325709/

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