4c53804e9cca9ae9d19ccd1970ba99d7f02e9ef9e8807d791ecde146b09ba9aa

Analysis

max time kernel
599s
max time network
605s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/04/2024, 10:51

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General

Target

Zlatia invitation letter.pdf
Size

123KB
MD5

7f41801c814b42c86c4d10afadbdb7a3
SHA1

9499de683022a072618801710b356ee0c003a48f
SHA256

9a16131287ff4a0eaeb104375ade885e7d568e0d8d8d2873220b679dc8f6ccd2
SHA512

470757e741e3999d838c14863c550e58085b2bf1725f80c9f14db118ff5724b686b647ae8f298bdf862deac055f28c946b35167c45559546f9ce77a609c1ad09
SSDEEP

3072:ZGfOK0hYdXHnQWdXHnd01TsF/ZVKvAI4xrWaGsL/W+AhUcdXHnRl68EN3gLDmrcF:BTYd3nQWd3ndUgF//QADes9AhUcd3nRN

Score

1^/10

Malware Config

Signatures

Checks processor information in registry 2 TTPs 2 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

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	AcroRd32.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4164	AcroRd32.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe
4164	AcroRd32.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 4164 wrote to memory of 2308	4164	AcroRd32.exe	92
PID 4164 wrote to memory of 2308	4164	AcroRd32.exe	92
PID 4164 wrote to memory of 2308	4164	AcroRd32.exe	92
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 4468	2308	RdrCEF.exe	93
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94
PID 2308 wrote to memory of 1076	2308	RdrCEF.exe	94

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\Zlatia invitation letter.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:4164
- 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:2308
- - 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=24CF14AEC91A6DAF24D80A5F33841372 --mojo-platform-channel-handle=1744 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:4468
- - 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=BA9290AE1E8D9C66F171A22585ECFD2E --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=4 --enable-main-frame-before-activation --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=BA9290AE1E8D9C66F171A22585ECFD2E --renderer-client-id=2 --mojo-platform-channel-handle=1764 --allow-no-sandbox-job /prefetch:1
    3⤵
    PID:1076
- - 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=3B0BF2CFD7DEC481B288336B413D9E22 --mojo-platform-channel-handle=2176 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:416
- - 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=62E1806B7C0ED9D1D9916C30F48288E8 --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=4 --enable-main-frame-before-activation --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=62E1806B7C0ED9D1D9916C30F48288E8 --renderer-client-id=5 --mojo-platform-channel-handle=2208 --allow-no-sandbox-job /prefetch:1
    3⤵
    PID:4988
- - 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=2E8529A4D41AE30A1DD9A4C796C2B3B5 --mojo-platform-channel-handle=2552 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:4608
- - 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=ECC9316F6A675E96610EE508121B050F --mojo-platform-channel-handle=2212 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:4184

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages

Filesize
64KB

MD5
275874cc225b7d530dd2b9e461ad7c2c

SHA1
6c6ab79191b26e273354c6fdcd5a6c2f48e16a8b

SHA256
a285c8d52df38950e24e479e6227ecab12c788f3a332569906b9ed58892fadb7

SHA512
b40003605ea843efa2328cab4f02d23529fc0e3ed542527e79630a6a4e4eca6cc52570eafa240b0170fb7bd54ce1fa44d6739ba61500103140a48aa25eb11163

Download Submit
C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages

Filesize
36KB

MD5
b30d3becc8731792523d599d949e63f5

SHA1
19350257e42d7aee17fb3bf139a9d3adb330fad4

SHA256
b1b77e96279ead2b460de3de70e2ea4f5ad1b853598a4e27a5caf3f1a32cc4f3

SHA512
523f54895fb07f62b9a5f72c8b62e83d4d9506bda57b183818615f6eb7286e3b9c5a50409bc5c5164867c3ccdeae88aa395ecca6bc7e36d991552f857510792e

Download Submit
C:\Users\Admin\AppData\LocalLow\Adobe\Acrobat\DC\ReaderMessages

Filesize
56KB

MD5
752a1f26b18748311b691c7d8fc20633

SHA1
c1f8e83eebc1cc1e9b88c773338eb09ff82ab862

SHA256
111dac2948e4cecb10b0d2e10d8afaa663d78d643826b592d6414a1fd77cc131

SHA512
a2f5f262faf2c3e9756da94b2c47787ce3a9391b5bd53581578aa9a764449e114836704d6dec4aadc097fed4c818831baa11affa1eb25be2bfad9349bb090fe5

Download Submit