66cb83b03a810acbd9b08071efcfb055b272da2df721695fc22624c6bb6cadd6

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
21/03/2023, 13:09

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General

Target
rReferenceNotice_pdf.exe
Size 249KB
Sample230321-qdr79scd5z
SHA256 66cb83b03a810acbd9b08071efcfb055b272da2df721695fc22624c6bb6cadd6
MD5 b3c87476205dddb0116e65ea556c0162
SHA1 925aef2b8e7666f04fb06c2de30aae3445ee929f
SHA512 02d0f18bb0df1d5887682b13534d021614599dab3162c118522f3a30460d73d47644d1dfe24dca4c8b34006fe718c5b88a069e9e8eef464a951bd0a149c77cb3
SSDEEP 6144:PYa6BCwFRtYQ88xkN8Q1UMbyBloNkxF5UDn+oNZdTM5:PYrrLtJ8I4xpNkxF5kn+IPA5
MD5 SHA1 SHA512 SSDEEP

Score

7^/10

Malware Config

Signatures

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Control Panel\International\Geo\Nation	clydryx.exe

Executes dropped EXE 2 IoCs

pid	Process
2040	clydryx.exe
668	clydryx.exe

Loads dropped DLL 4 IoCs

pid	Process
1104	rReferenceNotice_pdf.exe
1104	rReferenceNotice_pdf.exe
2040	clydryx.exe
1876	colorcpl.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2040 set thread context of 668	2040	clydryx.exe	29
PID 668 set thread context of 1248	668	clydryx.exe	8
PID 1876 set thread context of 1248	1876	colorcpl.exe	8

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-1563773381-2037468142-1146002597-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	colorcpl.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
668	clydryx.exe
668	clydryx.exe
668	clydryx.exe
668	clydryx.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1248	Explorer.EXE

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
2040	clydryx.exe
668	clydryx.exe
668	clydryx.exe
668	clydryx.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe
1876	colorcpl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	668	clydryx.exe
Token: SeDebugPrivilege	1876	colorcpl.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1248	Explorer.EXE
1248	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1248	Explorer.EXE
1248	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1104 wrote to memory of 2040	1104	rReferenceNotice_pdf.exe	27
PID 1104 wrote to memory of 2040	1104	rReferenceNotice_pdf.exe	27
PID 1104 wrote to memory of 2040	1104	rReferenceNotice_pdf.exe	27
PID 1104 wrote to memory of 2040	1104	rReferenceNotice_pdf.exe	27
PID 2040 wrote to memory of 668	2040	clydryx.exe	29
PID 2040 wrote to memory of 668	2040	clydryx.exe	29
PID 2040 wrote to memory of 668	2040	clydryx.exe	29
PID 2040 wrote to memory of 668	2040	clydryx.exe	29
PID 2040 wrote to memory of 668	2040	clydryx.exe	29
PID 1248 wrote to memory of 1876	1248	Explorer.EXE	30
PID 1248 wrote to memory of 1876	1248	Explorer.EXE	30
PID 1248 wrote to memory of 1876	1248	Explorer.EXE	30
PID 1248 wrote to memory of 1876	1248	Explorer.EXE	30
PID 1876 wrote to memory of 1664	1876	colorcpl.exe	33
PID 1876 wrote to memory of 1664	1876	colorcpl.exe	33
PID 1876 wrote to memory of 1664	1876	colorcpl.exe	33
PID 1876 wrote to memory of 1664	1876	colorcpl.exe	33
PID 1876 wrote to memory of 1664	1876	colorcpl.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1248
- C:\Users\Admin\AppData\Local\Temp\rReferenceNotice_pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\rReferenceNotice_pdf.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1104
- - C:\Users\Admin\AppData\Local\Temp\clydryx.exe
    "C:\Users\Admin\AppData\Local\Temp\clydryx.exe" C:\Users\Admin\AppData\Local\Temp\imdke.ub
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:2040
  - - C:\Users\Admin\AppData\Local\Temp\clydryx.exe
      "C:\Users\Admin\AppData\Local\Temp\clydryx.exe"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:668
- C:\Windows\SysWOW64\colorcpl.exe
  "C:\Windows\SysWOW64\colorcpl.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1876
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1664

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

Replay Monitor

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Downloads

ax4tyldh.zip

Path C:\Users\Admin\AppData\Local\Temp\ax4tyldh.zip
Size 474KB
SHA256 e028068b067e5e60fa5680b0bafa48a31287b6d614ee0b92df51cce23b974099
MD5 af10a982a2ef91c9787106eea1a0cc4a
SHA1 00435a36f5e6059287cde2cebb2882669cdba3a5
SHA512 73d0d3034405527798b854dc33fc608c7ccf0af1689e139af4bbb5a5324dc0748bdc2bf632468745920dc7be4eb7f0240d3cf1b5872d3f5c0c897725db78bf9f
SSDEEP 12288:EKlJSZA7zQtl7IZyBgByo77WNMzTSZJVahsC:roZKzQtl7IZyqBy278pJVahsC
MD5 SHA1 SHA512 SSDEEP

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clydryx.exe

Path C:\Users\Admin\AppData\Local\Temp\clydryx.exe
Size 5KB
SHA256 35971233cff0596e4e6ea657d261997489ae8618fbcf26ef0e8cd9ddd136f8f5
MD5 06dd25cc9b757db9772d566b1143628d
SHA1 1b5931912fe626e89d1b55fa10ef9ef6d66b6539
SHA512 66da3e81d5add2904fa9650f592eb63c75abbf69d7cc09b82b552b948a25b34c44ba8b9e7c416f045a077251520741e419a5085069408397520e5a8a04d8b617
SSDEEP 96:n8wZF3bluZz5b5P4oyn/7JhpywpZ6uYHrAhBPxesU8:n8UF3bY17P4oynl/ycZ6uYHrSBwsU8
MD5 SHA1 SHA512 SSDEEP

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clydryx.exe

Path C:\Users\Admin\AppData\Local\Temp\clydryx.exe
Size 5KB
SHA256 35971233cff0596e4e6ea657d261997489ae8618fbcf26ef0e8cd9ddd136f8f5
MD5 06dd25cc9b757db9772d566b1143628d
SHA1 1b5931912fe626e89d1b55fa10ef9ef6d66b6539
SHA512 66da3e81d5add2904fa9650f592eb63c75abbf69d7cc09b82b552b948a25b34c44ba8b9e7c416f045a077251520741e419a5085069408397520e5a8a04d8b617
SSDEEP 96:n8wZF3bluZz5b5P4oyn/7JhpywpZ6uYHrAhBPxesU8:n8UF3bY17P4oynl/ycZ6uYHrSBwsU8
MD5 SHA1 SHA512 SSDEEP

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clydryx.exe

Path C:\Users\Admin\AppData\Local\Temp\clydryx.exe
Size 5KB
SHA256 35971233cff0596e4e6ea657d261997489ae8618fbcf26ef0e8cd9ddd136f8f5
MD5 06dd25cc9b757db9772d566b1143628d
SHA1 1b5931912fe626e89d1b55fa10ef9ef6d66b6539
SHA512 66da3e81d5add2904fa9650f592eb63c75abbf69d7cc09b82b552b948a25b34c44ba8b9e7c416f045a077251520741e419a5085069408397520e5a8a04d8b617
SSDEEP 96:n8wZF3bluZz5b5P4oyn/7JhpywpZ6uYHrAhBPxesU8:n8UF3bY17P4oynl/ycZ6uYHrSBwsU8
MD5 SHA1 SHA512 SSDEEP

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clydryx.exe

Path C:\Users\Admin\AppData\Local\Temp\clydryx.exe
Size 5KB
SHA256 35971233cff0596e4e6ea657d261997489ae8618fbcf26ef0e8cd9ddd136f8f5
MD5 06dd25cc9b757db9772d566b1143628d
SHA1 1b5931912fe626e89d1b55fa10ef9ef6d66b6539
SHA512 66da3e81d5add2904fa9650f592eb63c75abbf69d7cc09b82b552b948a25b34c44ba8b9e7c416f045a077251520741e419a5085069408397520e5a8a04d8b617
SSDEEP 96:n8wZF3bluZz5b5P4oyn/7JhpywpZ6uYHrAhBPxesU8:n8UF3bY17P4oynl/ycZ6uYHrSBwsU8
MD5 SHA1 SHA512 SSDEEP

Submit Download

imdke.ub

Path C:\Users\Admin\AppData\Local\Temp\imdke.ub
Size 5KB
SHA256 34892a92b99be819e65844dc3dd88a833251c0f53393ba6c1539f15c107b904e
MD5 ab841ce6ce10ec1ff39ff0594ff81352
SHA1 763dc6e9295d48bf03368e41025acb14f83f3fa3
SHA512 475b0add2550060e7b01d843fa317a6aab270679b730201f2c6424e97bd2cf69375e1745ea187de81d5508d1ec91434655c8dd2aa030b36a11ce17d17884e906
SSDEEP 96:Farc6oYQWg/DrYuTk2XO5oSwsHejeGdOEij7Kwd4OAHqMPdlPxXIf/3AVWmPX:FarcR9JLhX1Sh+j1d7ij7KLKOdUvNmPX
MD5 SHA1 SHA512 SSDEEP

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yeczoyxt.rbx

Path C:\Users\Admin\AppData\Local\Temp\yeczoyxt.rbx
Size 205KB
SHA256 b999ac862a9c8ce22570f411074b797a9cd1fb94ab35bab0ab83beaf2a08b3b9
MD5 a3e36d2a11ef4bde3a45b722d38e4de6
SHA1 693054ee3d5ae77d9ae102d5b015235c2bace585
SHA512 e182a9a77f63c3f5f6b87ef418dac9e3732037ea82d1d8cbf5fd9a8a0e0ff37976e3cc1a4aee26a16d1cb217494bf05a37fd57233d0b36626c9a0a1434a591c1
SSDEEP 6144:X78EY4bPoddQD82XSR8q1OrubO4tHYa5hvHcxS:IEYAPItztUOO4FVLv8xS
MD5 SHA1 SHA512 SSDEEP

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clydryx.exe

Path \Users\Admin\AppData\Local\Temp\clydryx.exe
Size 5KB
SHA256 35971233cff0596e4e6ea657d261997489ae8618fbcf26ef0e8cd9ddd136f8f5
MD5 06dd25cc9b757db9772d566b1143628d
SHA1 1b5931912fe626e89d1b55fa10ef9ef6d66b6539
SHA512 66da3e81d5add2904fa9650f592eb63c75abbf69d7cc09b82b552b948a25b34c44ba8b9e7c416f045a077251520741e419a5085069408397520e5a8a04d8b617
SSDEEP 96:n8wZF3bluZz5b5P4oyn/7JhpywpZ6uYHrAhBPxesU8:n8UF3bY17P4oynl/ycZ6uYHrSBwsU8
MD5 SHA1 SHA512 SSDEEP

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clydryx.exe

Path \Users\Admin\AppData\Local\Temp\clydryx.exe
Size 5KB
SHA256 35971233cff0596e4e6ea657d261997489ae8618fbcf26ef0e8cd9ddd136f8f5
MD5 06dd25cc9b757db9772d566b1143628d
SHA1 1b5931912fe626e89d1b55fa10ef9ef6d66b6539
SHA512 66da3e81d5add2904fa9650f592eb63c75abbf69d7cc09b82b552b948a25b34c44ba8b9e7c416f045a077251520741e419a5085069408397520e5a8a04d8b617
SSDEEP 96:n8wZF3bluZz5b5P4oyn/7JhpywpZ6uYHrAhBPxesU8:n8UF3bY17P4oynl/ycZ6uYHrSBwsU8
MD5 SHA1 SHA512 SSDEEP

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clydryx.exe

Path \Users\Admin\AppData\Local\Temp\clydryx.exe
Size 5KB
SHA256 35971233cff0596e4e6ea657d261997489ae8618fbcf26ef0e8cd9ddd136f8f5
MD5 06dd25cc9b757db9772d566b1143628d
SHA1 1b5931912fe626e89d1b55fa10ef9ef6d66b6539
SHA512 66da3e81d5add2904fa9650f592eb63c75abbf69d7cc09b82b552b948a25b34c44ba8b9e7c416f045a077251520741e419a5085069408397520e5a8a04d8b617
SSDEEP 96:n8wZF3bluZz5b5P4oyn/7JhpywpZ6uYHrAhBPxesU8:n8UF3bY17P4oynl/ycZ6uYHrSBwsU8
MD5 SHA1 SHA512 SSDEEP

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sqlite3.dll

Path \Users\Admin\AppData\Local\Temp\sqlite3.dll
Size 904KB
SHA256 99e91ae250c955bd403ec1a2321d6b11fcb715bdcc7cb3f63ffb46b349afde5c
MD5 5e5ba61531d74e45b11cadb79e7394a1
SHA1 677224e14aac9dd35f367d5eb1704b36e69356b8
SHA512 712bfe419ba97ecf0ec8323a68743013e8c767da9d986f74ab94d2a395c3086cac2a5823048e0022d3bbcebb55281b9e1f8c87fdc9295c70cc5521b57850bf46
SSDEEP 24576:oI0H1fcKoDde/KBkI/njv7UU5vrVGFWG/Pi:obaRdeyBkI/jjUU5vJ8S
MD5 SHA1 SHA512 SSDEEP

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memory/668-74-0x00000000002A0000-0x00000000002B0000-memory.dmp

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memory/668-73-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/668-72-0x0000000000840000-0x0000000000B43000-memory.dmp

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memory/668-68-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/668-71-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/1248-84-0x00000000044E0000-0x00000000045A4000-memory.dmp

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memory/1248-75-0x0000000003F40000-0x0000000004010000-memory.dmp

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memory/1248-87-0x00000000044E0000-0x00000000045A4000-memory.dmp

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memory/1248-82-0x0000000003970000-0x0000000003A70000-memory.dmp

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memory/1876-77-0x0000000000050000-0x0000000000068000-memory.dmp

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memory/1876-83-0x0000000001DB0000-0x0000000001E3F000-memory.dmp

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memory/1876-81-0x0000000001E80000-0x0000000002183000-memory.dmp

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memory/1876-80-0x00000000000A0000-0x00000000000CD000-memory.dmp

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memory/1876-79-0x0000000000050000-0x0000000000068000-memory.dmp

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memory/1876-127-0x0000000061E00000-0x0000000061ECE000-memory.dmp

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memory/1876-131-0x0000000061E00000-0x0000000061ECE000-memory.dmp

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