Behavioral task
behavioral1
Sample
ren_installer.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
ren_installer.exe
Resource
win10v2004-20230220-en
General
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Target
ren_installer.exe
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Size
3.1MB
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MD5
10c9f8a8e8c8c9797643d9b1edb01cc1
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SHA1
defcd4e8bba01bb730572dff40fad78e053f337a
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SHA256
0809e0c6095acabdcb816728c39fc818741c3197c4635d7a53a926f2f8df7557
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SHA512
a3c1e18ed24bcc03385a6cb7e50bae9c475c93f0a9af88ac731e9c1923b314ea60e79bd4b9b420b31050ea2d67ac6746cb7d3b2edba7056e91fd665f12311849
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SSDEEP
49152:+vgt62XlaSFNWPjljiFa2RoUYI3vLroGd4THHB72eh2NT:+vM62XlaSFNWPjljiFXRoUYI3vf
Malware Config
Extracted
quasar
1.4.1
ReServices
185.65.134.175:55498
86e242cc-399d-4e30-a743-e89f0418f106
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encryption_key
B451C26057A2AEFC83990793720D2316EA48C49A
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install_name
renservice.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
renservice
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subdirectory
servicerenk
Signatures
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Quasar family
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Quasar payload 1 IoCs
Processes:
resource yara_rule sample family_quasar -
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource ren_installer.exe
Files
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ren_installer.exe.exe windows x86
f34d5f2d4577ed6d9ceec516c1f5a744
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
mscoree
_CorExeMain
Sections
.text Size: 3.1MB - Virtual size: 3.1MB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rsrc Size: 3KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 12B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ