eb813966621a14ba1a1157c568b00d21df3cf11ada06d95a3962e62bd99555f3

Analysis

max time kernel
119s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03/02/2023, 08:06

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General

Target

[KB8544] Bulk Distribution cross your company.pdf
Size

100KB
MD5

771cdb2939dd13dd636d27ba85b1fc84
SHA1

891849c0ab7f4df8bab25e2bef0ca3b3c7d9e01e
SHA256

39b281f23759efbf2d299f518dfc68f3171026e128e5bd3379ea95082a7b9605
SHA512

942693b91c79789d8ac6df7e10e4d9dadce175b1f92e0f8f4f16d2fb76d0a176c3a4f06ef58a56d4b51a16dd77e8d01cb152667c25f73732bda23b301a8a3470
SSDEEP

1536:NXl++czPTGNsEv4fgEsZz2tGrdI76dMZgUFFCQIbNKgyabedogArE+:1lPMPesdgZZdQvFFWeddEZ

Score

5^/10

Malware Config

Signatures

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{013FED32-5C90-4E58-B784-E6F7E13E576C}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{AC175BC6-BCC3-43FA-B7E4-1DE347323F95}.catalogItem	svchost.exe

Checks processor information in registry 2 TTPs 5 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	AcroRd32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	AcroRd32.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	AcroRd32.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1564	AcroRd32.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe
1564	AcroRd32.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1564 wrote to memory of 3840	1564	AcroRd32.exe	89
PID 1564 wrote to memory of 3840	1564	AcroRd32.exe	89
PID 1564 wrote to memory of 3840	1564	AcroRd32.exe	89
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 3840 wrote to memory of 428	3840	RdrCEF.exe	93
PID 1564 wrote to memory of 1836	1564	AcroRd32.exe	94
PID 1564 wrote to memory of 1836	1564	AcroRd32.exe	94
PID 1564 wrote to memory of 1836	1564	AcroRd32.exe	94
PID 3840 wrote to memory of 1800	3840	RdrCEF.exe	95
PID 3840 wrote to memory of 1800	3840	RdrCEF.exe	95
PID 3840 wrote to memory of 1800	3840	RdrCEF.exe	95
PID 3840 wrote to memory of 1800	3840	RdrCEF.exe	95
PID 3840 wrote to memory of 1800	3840	RdrCEF.exe	95
PID 3840 wrote to memory of 1800	3840	RdrCEF.exe	95
PID 3840 wrote to memory of 1800	3840	RdrCEF.exe	95
PID 3840 wrote to memory of 1800	3840	RdrCEF.exe	95
PID 3840 wrote to memory of 1800	3840	RdrCEF.exe	95
PID 3840 wrote to memory of 1800	3840	RdrCEF.exe	95
PID 3840 wrote to memory of 1800	3840	RdrCEF.exe	95
PID 3840 wrote to memory of 1800	3840	RdrCEF.exe	95
PID 3840 wrote to memory of 1800	3840	RdrCEF.exe	95
PID 3840 wrote to memory of 1800	3840	RdrCEF.exe	95
PID 3840 wrote to memory of 1800	3840	RdrCEF.exe	95
PID 3840 wrote to memory of 1800	3840	RdrCEF.exe	95
PID 3840 wrote to memory of 1800	3840	RdrCEF.exe	95

C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe
"C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\[KB8544] Bulk Distribution cross your company.pdf"
1⤵
- Checks processor information in registry
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1564
- C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
  "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --backgroundcolor=16514043
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3840
- - C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=4B990C6BDF39A70E0DE36425B93A82C5 --mojo-platform-channel-handle=1732 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:428
- - C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=renderer --disable-browser-side-navigation --disable-gpu-compositing --service-pipe-token=A0DB3DB38581F1A26C137E0918141EC3 --lang=en-US --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --enable-pinch --device-scale-factor=1 --num-raster-threads=1 --enable-gpu-async-worker-context --content-image-texture-target=0,0,3553;0,1,3553;0,2,3553;0,3,3553;0,4,3553;0,5,3553;0,6,3553;0,7,3553;0,8,3553;0,9,3553;0,10,3553;0,11,3553;0,12,3553;0,13,3553;0,14,3553;0,15,3553;0,16,3553;0,17,3553;0,18,3553;1,0,3553;1,1,3553;1,2,3553;1,3,3553;1,4,3553;1,5,3553;1,6,3553;1,7,3553;1,8,3553;1,9,3553;1,10,3553;1,11,3553;1,12,3553;1,13,3553;1,14,3553;1,15,3553;1,16,3553;1,17,3553;1,18,3553;2,0,3553;2,1,3553;2,2,3553;2,3,3553;2,4,3553;2,5,3553;2,6,3553;2,7,3553;2,8,3553;2,9,3553;2,10,3553;2,11,3553;2,12,3553;2,13,3553;2,14,3553;2,15,3553;2,16,3553;2,17,3553;2,18,3553;3,0,3553;3,1,3553;3,2,3553;3,3,3553;3,4,3553;3,5,3553;3,6,3553;3,7,3553;3,8,3553;3,9,3553;3,10,3553;3,11,3553;3,12,3553;3,13,3553;3,14,3553;3,15,3553;3,16,3553;3,17,3553;3,18,3553;4,0,3553;4,1,3553;4,2,3553;4,3,3553;4,4,3553;4,5,3553;4,6,3553;4,7,3553;4,8,3553;4,9,3553;4,10,3553;4,11,3553;4,12,3553;4,13,3553;4,14,3553;4,15,3553;4,16,3553;4,17,3553;4,18,3553;5,0,3553;5,1,3553;5,2,3553;5,3,3553;5,4,3553;5,5,3553;5,6,3553;5,7,3553;5,8,3553;5,9,3553;5,10,3553;5,11,3553;5,12,3553;5,13,3553;5,14,3553;5,15,3553;5,16,3553;5,17,3553;5,18,3553;6,0,3553;6,1,3553;6,2,3553;6,3,3553;6,4,3553;6,5,3553;6,6,3553;6,7,3553;6,8,3553;6,9,3553;6,10,3553;6,11,3553;6,12,3553;6,13,3553;6,14,3553;6,15,3553;6,16,3553;6,17,3553;6,18,3553 --disable-accelerated-video-decode --service-request-channel-token=A0DB3DB38581F1A26C137E0918141EC3 --renderer-client-id=2 --mojo-platform-channel-handle=1768 --allow-no-sandbox-job /prefetch:1
    3⤵
    PID:1800
- - C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=renderer --disable-browser-side-navigation --disable-gpu-compositing --service-pipe-token=4EE35B07A57B84B96025381CD0EA788E --lang=en-US --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --enable-pinch --device-scale-factor=1 --num-raster-threads=1 --enable-gpu-async-worker-context --content-image-texture-target=0,0,3553;0,1,3553;0,2,3553;0,3,3553;0,4,3553;0,5,3553;0,6,3553;0,7,3553;0,8,3553;0,9,3553;0,10,3553;0,11,3553;0,12,3553;0,13,3553;0,14,3553;0,15,3553;0,16,3553;0,17,3553;0,18,3553;1,0,3553;1,1,3553;1,2,3553;1,3,3553;1,4,3553;1,5,3553;1,6,3553;1,7,3553;1,8,3553;1,9,3553;1,10,3553;1,11,3553;1,12,3553;1,13,3553;1,14,3553;1,15,3553;1,16,3553;1,17,3553;1,18,3553;2,0,3553;2,1,3553;2,2,3553;2,3,3553;2,4,3553;2,5,3553;2,6,3553;2,7,3553;2,8,3553;2,9,3553;2,10,3553;2,11,3553;2,12,3553;2,13,3553;2,14,3553;2,15,3553;2,16,3553;2,17,3553;2,18,3553;3,0,3553;3,1,3553;3,2,3553;3,3,3553;3,4,3553;3,5,3553;3,6,3553;3,7,3553;3,8,3553;3,9,3553;3,10,3553;3,11,3553;3,12,3553;3,13,3553;3,14,3553;3,15,3553;3,16,3553;3,17,3553;3,18,3553;4,0,3553;4,1,3553;4,2,3553;4,3,3553;4,4,3553;4,5,3553;4,6,3553;4,7,3553;4,8,3553;4,9,3553;4,10,3553;4,11,3553;4,12,3553;4,13,3553;4,14,3553;4,15,3553;4,16,3553;4,17,3553;4,18,3553;5,0,3553;5,1,3553;5,2,3553;5,3,3553;5,4,3553;5,5,3553;5,6,3553;5,7,3553;5,8,3553;5,9,3553;5,10,3553;5,11,3553;5,12,3553;5,13,3553;5,14,3553;5,15,3553;5,16,3553;5,17,3553;5,18,3553;6,0,3553;6,1,3553;6,2,3553;6,3,3553;6,4,3553;6,5,3553;6,6,3553;6,7,3553;6,8,3553;6,9,3553;6,10,3553;6,11,3553;6,12,3553;6,13,3553;6,14,3553;6,15,3553;6,16,3553;6,17,3553;6,18,3553 --disable-accelerated-video-decode --service-request-channel-token=4EE35B07A57B84B96025381CD0EA788E --renderer-client-id=4 --mojo-platform-channel-handle=2184 --allow-no-sandbox-job /prefetch:1
    3⤵
    PID:3176
- - C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=1EA2DB76B9F105D3A55752B9A6656DEB --mojo-platform-channel-handle=1808 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:2448
- - C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=44E6A38163426331E38D81D7630B9424 --mojo-platform-channel-handle=1948 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:116
- - C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
    "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --type=gpu-process --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --gpu-preferences=GAAAAAAAAAAAB4AAAQAAAAAAAAAAAGAA --use-gl=swiftshader-webgl --gpu-vendor-id=0x1234 --gpu-device-id=0x1111 --gpu-driver-vendor="Google Inc." --gpu-driver-version=3.3.0.2 --gpu-driver-date=2017/04/07 --disable-pack-loading --lang=en-US --log-file="C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\debug.log" --log-severity=disable --product-version="ReaderServices/19.10.20064 Chrome/64.0.3282.119" --service-request-channel-token=B107937D7F475FEAF6EAC96C32997A98 --mojo-platform-channel-handle=1924 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:4616
- C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe
  "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe" --backgroundcolor=16514043
  2⤵
  PID:1836

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:4696

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:2240

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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