MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bb596a4d943381a7c56efa450df660f6707d317b806d715eac72a62100ea9832. 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


Formbook


Vendor detections: 12


Intelligence 12 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bb596a4d943381a7c56efa450df660f6707d317b806d715eac72a62100ea9832
SHA3-384 hash: 35b31ebb255ad77505f92bbcd81332a7dedfd23c08897082bab32ee2be7c527efdc6a6d3be74a01cb0a681c22aeacbca
SHA1 hash: 6fea25aae0553ccc207373e39529b9cd0998ed31
MD5 hash: 2555262098b6620edf2bb59e99e89e74
humanhash: fillet-lima-maryland-bluebird
File name:RMTT Documentation-REF GZARX019-10-22.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:346'576 bytes
First seen:2022-10-20 13:01:57 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b34f154ec913d2d2c435cbd644e91687 (535 x GuLoader, 110 x RemcosRAT, 80 x EpsilonStealer)
ssdeep 6144:8VGdx6x1/oup0OhaxhA5HW5Z2vsmyrunaqhexSHgGzA49BLkywwLxlkwJI9uJG0:wnAkYy8cyeakdAI3Qxwll5I9uf
Threatray 15'527 similar samples on MalwareBazaar
TLSH T15B7422615F40F41BE67A43B4033D19BB9E3ED6585488AF8A07D0AD44ED33BA1A91F363
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 d183a4a49ec65033 (1 x Formbook, 1 x GuLoader)
Reporter malwarelabnet
Tags:exe FormBook signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2021-12-24T12:22:47Z
Valid to:2024-12-23T12:22:47Z
Serial number: 0c3325cc5073861c
Thumbprint Algorithm:SHA256
Thumbprint: b6d77a079f505a843d06130085a64297ad1d0334964686058cf7b23cf470c8e4
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
201
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
guloader
Create hunting rule
ID:
1
File name:
RMTT Documentation-REF GZARX019-10-22.exe
Verdict:
Malicious activity
Analysis date:
2022-10-20 13:03:46 UTC
Tags:
guloader
Link:
https://app.any.run/tasks/de3015d0-9c8d-4d3e-bbdf-bbeaa8cfcd6d

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/321997/
Detection(s):
SecuriteInfo.com.Gen.Variant.Nemesis.12362.7638.27760.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file
Creating a file in the %AppData% subdirectories
Delayed reading of the file
Creating a file in the %temp% subdirectories
Sending a custom TCP request
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/43971/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
nemesis overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/635146cb7f72336a8d629d37/reports/d5505995-ce72-4d55-a5b3-5ba86e325acd/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/caa22ced-e754-47e7-8210-f0b1c022e1f6
Result
Threat name:
FormBook, GuLoader
Create hunting rule
Detection:
malicious
Classification:
evad.troj.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1094153
Signature
C2 URLs / IPs found in malware configuration
Executable has a suspicious name (potential lure to open the executable)
Initial sample is a PE file and has a suspicious name
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
Multi AV Scanner detection for submitted file
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: 726809 Sample: RMTT Documentation-REF GZAR... Startdate: 20/10/2022 Architecture: WINDOWS Score: 100 33 www.wooklabel.store 2->33 35 www.potray.info 2->35 37 24 other IPs or domains 2->37 49 Snort IDS alert for network traffic 2->49 51 Multi AV Scanner detection for domain / URL 2->51 53 Malicious sample detected (through community Yara rule) 2->53 55 7 other signatures 2->55 10 RMTT Documentation-REF GZARX019-10-22.exe 7 48 2->10         started        signatures3 process4 file5 29 C:\Users\user\AppData\Local\...\System.dll, PE32 10->29 dropped 31 C:\Users\user\AppData\...\glibmm-2.4.dll, PE32+ 10->31 dropped 67 Tries to detect Any.run 10->67 14 RMTT Documentation-REF GZARX019-10-22.exe 6 10->14         started        signatures6 process7 dnsIp8 45 googlehosted.l.googleusercontent.com 142.250.184.225, 443, 49819 GOOGLEUS United States 14->45 47 drive.google.com 216.58.212.174, 443, 49818 GOOGLEUS United States 14->47 69 Modifies the context of a thread in another process (thread injection) 14->69 71 Tries to detect Any.run 14->71 73 Maps a DLL or memory area into another process 14->73 75 2 other signatures 14->75 18 explorer.exe 14->18 injected 22 RAVCpl64.exe 14->22 injected signatures9 process10 dnsIp11 39 dafdental.com 108.167.183.60, 49845, 49846, 49847 UNIFIEDLAYER-AS-1US United States 18->39 41 nedakv.com 162.241.226.133, 49863, 49864, 49865 UNIFIEDLAYER-AS-1US United States 18->41 43 12 other IPs or domains 18->43 57 System process connects to network (likely due to code injection or exploit) 18->57 24 systray.exe 13 18->24         started        signatures12 process13 signatures14 59 Tries to steal Mail credentials (via file / registry access) 24->59 61 Tries to harvest and steal browser information (history, passwords, etc) 24->61 63 Writes to foreign memory regions 24->63 65 3 other signatures 24->65 27 firefox.exe 24->27         started        process15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bb596a4d943381a7c56efa450df660f6707d317b806d715eac72a62100ea9832/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2022-10-20 07:28:57 UTC
File Type:
PE (Exe)
Extracted files:
8
AV detection:
20 of 41 (48.78%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xnmwutmugoa2prlo7jcq35ta6zyh2ml3qbwxcxvmoktccahktaza._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
cloudeye
Create hunting rule
Similar samples:
210f5a0beaff1d3d9464cd5dd312878692d7e2a752edc1c397eeed4051d8fb3b
Formbook
3bbb41e4800c8e28f22939e4e966ea372c671bf54b736aa698b7ec4b0f6f09b4
Formbook
3d9766bbf57730b0aa1d3d43a8ce30d7f7b0798b82f32d235a06af5cdbb6ab6c
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5ef60b3981c6f69e4dc216f6dc71c4f43a918b625f6a3d9bfbce2067016ddfa7
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684abdf2d2c027b52fd633c26253cecb40f71f8fb341b6e60bed1ab8d79fe19e
Formbook
7ca3b28aa32d6b9bd972c430c47691db7212f9fd7b713c3ff2fab8b10a0bd66a
Formbook
806a765203bdd0a1e4c715bf6022dce830d04ae041ef978b3b2890b158a7e180
Formbook
b1248c9a9d2892a23cd6927ccfad438e360f5977e47c38d424522e7d67d10816
Formbook
bd92c924585988396551288f43f9e771e13f57e375f2f6e1011d72fc1114900b
Formbook
e9f669028697238e2a9a181b9e409909695d03eccd09a35db30729fb51952527
Formbook
+ 15'517 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:pfgc discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/221020-p9r2psegh2/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks installed software on the system
Legitimate hosting services abused for malware hosting/C2
Checks QEMU agent file
Checks computer location settings
Loads dropped DLL
Formbook
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/83cb3db2-a0a7-45eb-a29a-a2e50e972849
Unpacked files
SH256 hash:
a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7
MD5 hash:
75ed96254fbf894e42058062b4b4f0d1
SHA1 hash:
996503f1383b49021eb3427bc28d13b5bbd11977
Link:
https://www.unpac.me/results/aea3be5b-3b06-42f7-8ebf-8bb2fd4bc8a5/
SH256 hash:
bb596a4d943381a7c56efa450df660f6707d317b806d715eac72a62100ea9832
MD5 hash:
2555262098b6620edf2bb59e99e89e74
SHA1 hash:
6fea25aae0553ccc207373e39529b9cd0998ed31
Link:
https://www.unpac.me/results/aea3be5b-3b06-42f7-8ebf-8bb2fd4bc8a5/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/bb596a4d9433/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/bb596a4d943381a7c56efa450df660f6707d317b806d715eac72a62100ea9832

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/321997/

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