General
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Target
sample1.zip
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Size
22KB
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Sample
211027-ktdrxsbbd7
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MD5
931343647e3dfdffd3663935ea27f450
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SHA1
87460b87ffb2f939dc5d1e49a95324b5dbeb6c27
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SHA256
b0d8f9aa9566245362d7e7443ab4add80ce90fbdf35a30df9a89e9dae5f22190
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SHA512
37e12d7b15403234666e36893d27528514fea9b9f19cd25fa95c1f84a1a79e334dc25c47620ea4c8b361cf464830151ee3b4724513013b69f1db95699c41b457
Static task
static1
Behavioral task
behavioral1
Sample
ec35c76ad2c8192f09c02eca1f263b406163470ca8438d054db7adcf5bfc0597.sample.exe
Resource
win7-en-20211014
Behavioral task
behavioral2
Sample
ec35c76ad2c8192f09c02eca1f263b406163470ca8438d054db7adcf5bfc0597.sample.exe
Resource
win11
Behavioral task
behavioral3
Sample
ec35c76ad2c8192f09c02eca1f263b406163470ca8438d054db7adcf5bfc0597.sample.exe
Resource
win10-en-20210920
Malware Config
Extracted
C:\Users\Public\Documents\RGNR_227491BF.txt
1BKK8bsFfG3YxTd3N15GxaYfHopoThXoY4
https://tox.chat/download.html
Targets
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Target
ec35c76ad2c8192f09c02eca1f263b406163470ca8438d054db7adcf5bfc0597.sample
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Size
39KB
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MD5
7529e3c83618f5e3a4cc6dbf3a8534a6
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SHA1
0f944504eebfca5466b6113853b0d83e38cf885a
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SHA256
ec35c76ad2c8192f09c02eca1f263b406163470ca8438d054db7adcf5bfc0597
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SHA512
7eef97937cc1e3afd3fca0618328a5b6ecb72123a199739f6b1b972dd90e01e07492eb26352ee00421d026c63af48973c014bdd76d95ea841eb2fefd613631cc
Score10/10-
RagnarLocker
Ransomware first seen at the end of 2019, which has been used in targetted attacks against multiple companies.
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Modifies extensions of user files
Ransomware generally changes the extension on encrypted files.
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Drops startup file
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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