guloader | 79a98e38753880d1a0a288fc0380de5b6c03c0550007d86ad9fb33685369b0b3

Analysis

max time kernel
31s
max time network
132s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
04/06/2023, 05:39

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General

Target

euassb.exe
Size

339KB
MD5

5e1592f12f2c04eab3731d184298a30b
SHA1

01e5edaa39c9ceead16ed6cedca0744a2242400d
SHA256

79a98e38753880d1a0a288fc0380de5b6c03c0550007d86ad9fb33685369b0b3
SHA512

7d9eac76eb9e1141291e991a30f49a57e2eb50361837c7e71cb8f34b7016639f2e88bf22cf1f4b5546b3486e1d1a16f8d16b50f22006750b0c008c37c520db92
SSDEEP

6144:bmOPbtybqh+/fDv9vE5R1bHfxSqCcoVzqzXLkFmSRr/:ft2W+nz9s5RzCcoszX0mer/

Score

10^/10

guloader downloader

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Loads dropped DLL 1 IoCs

pid	Process
1992	euassb.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Degenerer\Isoleringsarbejderne\Dassent\robinsonades.ini	euassb.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

C:\Users\Admin\AppData\Local\Temp\euassb.exe
"C:\Users\Admin\AppData\Local\Temp\euassb.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
PID:1992
- C:\Users\Admin\AppData\Local\Temp\euassb.exe
  "C:\Users\Admin\AppData\Local\Temp\euassb.exe"
  2⤵
  PID:1040

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
62KB

MD5
3ac860860707baaf32469fa7cc7c0192

SHA1
c33c2acdaba0e6fa41fd2f00f186804722477639

SHA256
d015145d551ecd14916270efad773bbc9fd57fad2228d2c24559f696c961d904

SHA512
d62ad2408c969a95550fb87efda50f988770ba5e39972041bf85924275baf156b8bec309ecc6409e5acdd37ec175dea40eff921ab58933b5b5b5d35a6147567c

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

Filesize
344B

MD5
5e96a0a3278a44b7d58310f0c1152874

SHA1
6ae2dc14b0362efe3a0474ce9841adf83f1d111f

SHA256
d52249457f7d719ec6c74cc9f5a62b89ed04318a92bf513c741812b71e3430da

SHA512
0ab6873a2a6de324afe06fa4f0b273c7922792cdfec73a6635f838d2ac2b2500547d61e99edb633e5c2755698c756cd79be722a4f96b8a9e537854a021bea3e8

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab6AE6.tmp

Filesize
61KB

MD5
fc4666cbca561e864e7fdf883a9e6661

SHA1
2f8d6094c7a34bf12ea0bbf0d51ee9c5bb7939a5

SHA256
10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b

SHA512
c71f54b571e01f247f072be4bbebdf5d8410b67eb79a61e7e0d9853fe857ab9bd12f53e6af3394b935560178107291fc4be351b27deb388eba90ba949633d57d

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar6C92.tmp

Filesize
164KB

MD5
4ff65ad929cd9a367680e0e5b1c08166

SHA1
c0af0d4396bd1f15c45f39d3b849ba444233b3a2

SHA256
c8733c93cc5aaf5ca206d06af22ee8dbdec764fb5085019a6a9181feb9dfdee6

SHA512
f530dc0d024a5a3b8903ffaaa41b608a5ccdd6da4ba1949f2c2e55a9fca475fec5c8d2119b5763cabe7ef1c3788fb9dcac621869db51d65b1d83cfe404fb4c27

Download Submit
\Users\Admin\AppData\Local\Temp\nsj8CF6.tmp\System.dll

Filesize
11KB

MD5
8b3830b9dbf87f84ddd3b26645fed3a0

SHA1
223bef1f19e644a610a0877d01eadc9e28299509

SHA256
f004c568d305cd95edbd704166fcd2849d395b595dff814bcc2012693527ac37

SHA512
d13cfd98db5ca8dc9c15723eee0e7454975078a776bce26247228be4603a0217e166058ebadc68090afe988862b7514cb8cb84de13b3de35737412a6f0a8ac03

Download Submit
memory/1040-67-0x0000000001470000-0x000000000362E000-memory.dmp

Filesize
33.7MB

Download
memory/1040-69-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/1040-66-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/1040-151-0x0000000001470000-0x000000000362E000-memory.dmp

Filesize
33.7MB

Download
memory/1040-154-0x0000000001470000-0x000000000362E000-memory.dmp

Filesize
33.7MB

Download
memory/1040-155-0x0000000001470000-0x000000000362E000-memory.dmp

Filesize
33.7MB

Download
memory/1992-68-0x00000000038D0000-0x0000000005A8E000-memory.dmp

Filesize
33.7MB

Download
memory/1992-65-0x00000000038D0000-0x0000000005A8E000-memory.dmp

Filesize
33.7MB

Download