0cf4878a3b94e01fd8a6ea9cdbfbe1a510440ea6432632ec9c1077c7b0633690

Resubmissions

06/03/2024, 21:59

240306-1v95hsbf2w 1

06/03/2024, 21:55

240306-1sq9maae89 1

Analysis

max time kernel
201s
max time network
197s
platform
windows10-1703_x64
resource
win10-20240221-en
resource tags

arch:x64arch:x86image:win10-20240221-enlocale:en-usos:windows10-1703-x64system
submitted
06/03/2024, 21:59

Sharing

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Report Analysis Logs

General

Target

David Jai Kahn Job Offer Letter.pdf
Size

126KB
MD5

742d0a4d6a627edb7925c5503619c736
SHA1

48f0f7f18d0e74942601a2da373ca53536261b8d
SHA256

0cf4878a3b94e01fd8a6ea9cdbfbe1a510440ea6432632ec9c1077c7b0633690
SHA512

9a678bab08d0ecb6f12eaa6ffa02200ff5c420e55ebfaa4e9c0c788bb805d482a96883dc6a352c434a619fd85ceb6fc6fb251fb075d911af14a8e7f5c7f8c850
SSDEEP

3072:HB2WaYFardL3t2hmZqSdWDZh7kegvSAJgf2F9q0a5wi0sbgQaa:HB2Wp+d7zZmDZhZgSA6Oi0a54sbWa

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-1-5-21-1990815831-2007029909-3877453929-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	AcroRd32.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

pid	Process
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2644	AcroRd32.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe
2644	AcroRd32.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 196	2644	AcroRd32.exe	74
PID 2644 wrote to memory of 196	2644	AcroRd32.exe	74
PID 2644 wrote to memory of 196	2644	AcroRd32.exe	74
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 652	196	RdrCEF.exe	75
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76
PID 196 wrote to memory of 4460	196	RdrCEF.exe	76

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\David Jai Kahn Job Offer 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:2644
- 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:196
- - 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=6850BB954516E043832F0A00F1C1CDE7 --mojo-platform-channel-handle=1636 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:652
- - 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=E31803BF55A44FD2C31E2A276F8C8B33 --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=E31803BF55A44FD2C31E2A276F8C8B33 --renderer-client-id=2 --mojo-platform-channel-handle=1644 --allow-no-sandbox-job /prefetch:1
    3⤵
    PID:4460
- - 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=C926E072944120D4D1CC8C2A62A69AB2 --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=C926E072944120D4D1CC8C2A62A69AB2 --renderer-client-id=4 --mojo-platform-channel-handle=2216 --allow-no-sandbox-job /prefetch:1
    3⤵
    PID:2976
- - 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=E89459D14BF27D49C7C2F39FE9CD9C78 --mojo-platform-channel-handle=2552 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:4576
- - 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=10BE524AD0E67C763176991B7739D8AE --mojo-platform-channel-handle=2580 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:4476
- - 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=283118E055E7176C955CF68C12108647 --mojo-platform-channel-handle=1740 --allow-no-sandbox-job --ignored=" --type=renderer " /prefetch:2
    3⤵
    PID:4012

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
15b1127b901a7686c0490583f963a9a3

SHA1
f4a4a8203cc92b3069e68fb1b1b8b505ceaa7e35

SHA256
5583fb20150aa21c4941832949cae1f211ef895244837d00ff43e304c8c00884

SHA512
c68c259fdbfb61ea7c62c3ddd9849c00aeddff242764f8d2c5e748c4a75b67f8a92f20daa80975e7f63b3db776bac1be4bcee5e1289274430c3303cc5e34d8ee

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
memory/2644-217-0x000000000B600000-0x000000000B74D000-memory.dmp

Filesize
1.3MB

Download