guloader | ac131e3fbcd040f4a5f0dc8e90d3c77bb98d934d5c6696de510ca89f18599062

Analysis

max time kernel
142s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
09/08/2023, 17:45

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General

Target
ac131e3fbcd040f4a5f0dc8e90d3c77bb98d934d5c6696de510ca89f18599062exe_JC.exe
Size 376KB
Sample230809-wbwqkaeb32
SHA256 ac131e3fbcd040f4a5f0dc8e90d3c77bb98d934d5c6696de510ca89f18599062
MD5 08defe80ace1f032875c8127ae5e4481
SHA1 2d7ba957be6c89cd3633a63dfd8e925a90d40bd4
SHA512 09fc727fcdc86e57bc143571d061652787f2e82189255df2bebf2951ae705ef9d185646cadcd30b671233959512788c37fd6a350b28a676f064c87228bbf9bd7
SSDEEP 6144:3BebKFxUGBNC3Iu5gro6xBcbKiydMdh5BwprYXUdOTDuCUkJf1dqDQrFGCf:4KFxc3Iu5g86xKbUdOmrUUdmuROOkrF5
MD5 SHA1 SHA512 SSDEEP

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
2600	ac131e3fbcd040f4a5f0dc8e90d3c77bb98d934d5c6696de510ca89f18599062exe_JC.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4268	2600	WerFault.exe	82

C:\Users\Admin\AppData\Local\Temp\ac131e3fbcd040f4a5f0dc8e90d3c77bb98d934d5c6696de510ca89f18599062exe_JC.exe
"C:\Users\Admin\AppData\Local\Temp\ac131e3fbcd040f4a5f0dc8e90d3c77bb98d934d5c6696de510ca89f18599062exe_JC.exe"
1⤵
- Loads dropped DLL
PID:2600
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2600 -s 1060
  2⤵
  - Program crash
  PID:4268

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2600 -ip 2600
1⤵
PID:2948

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

System.dll

Path C:\Users\Admin\AppData\Local\Temp\nsh72FE.tmp\System.dll
Size 11KB
SHA256 fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e
MD5 3f176d1ee13b0d7d6bd92e1c7a0b9bae
SHA1 fe582246792774c2c9dd15639ffa0aca90d6fd0b
SHA512 0a69124819b7568d0dea4e9e85ce8fe61c7ba697c934e3a95e2dcfb9f252b1d9da7faf8774b6e8efd614885507acc94987733eba09a2f5e7098b774dfc8524b6
SSDEEP 192:OPtkumJX7zB22kGwfy0mtVgkCPOsX1un:/702k5qpdsXQn
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2600-140-0x00000000049F0000-0x0000000005667000-memory.dmp

Download

memory/2600-141-0x00000000049F0000-0x0000000005667000-memory.dmp