Analysis
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max time kernel
150s -
max time network
158s -
platform
windows10-2004_x64 -
resource
win10v2004-20231023-en -
resource tags
arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system -
submitted
19/11/2023, 22:24
Behavioral task
behavioral1
Sample
ab.exe
Resource
win7-20231023-en
Behavioral task
behavioral2
Sample
ab.exe
Resource
win10v2004-20231023-en
General
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Target
ab.exe
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Size
775KB
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MD5
0b486fe0503524cfe4726a4022fa6a68
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SHA1
297dea71d489768ce45d23b0f8a45424b469ab00
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SHA256
1228d0f04f0ba82569fc1c0609f9fd6c377a91b9ea44c1e7f9f84b2b90552da2
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SHA512
f4273ca5cc3a9360af67f4b4ee0bf067cf218c5dc8caeafbfa1b809715effe742f2e1f54e4fe9ec8d4b8e3ae697d57f91c2b49bdf203648508d75d4a76f53619
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SSDEEP
24576:TCs99+OXLpMePfI8TgmBTCDqEbOpPtpFhyxfq:5GOXLpMePfzVTCD7gPtLhSfq
Malware Config
Extracted
C:\Users\Admin\Desktop\0vN0x_readme_.txt
avaddon
http://avaddongun7rngel.onion
http://avaddonbotrxmuyl.onion
Extracted
C:\Users\Admin\Documents\0vN0x_readme_.txt
avaddon
http://avaddongun7rngel.onion
http://avaddonbotrxmuyl.onion
Extracted
C:\Users\Admin\Downloads\0vN0x_readme_.txt
avaddon
http://avaddongun7rngel.onion
http://avaddonbotrxmuyl.onion
Extracted
C:\Users\Admin\Pictures\0vN0x_readme_.txt
avaddon
http://avaddongun7rngel.onion
http://avaddonbotrxmuyl.onion
Signatures
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Avaddon
Ransomware-as-a-service first released in June 2020 and currently expanding its userbase among criminal actors.
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Avaddon payload 2 IoCs
resource yara_rule behavioral2/files/0x0008000000022d56-434.dat family_avaddon behavioral2/files/0x0008000000022d56-435.dat family_avaddon -
Process spawned unexpected child process 3 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1236 2120 wmic.exe 85 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4052 2120 wmic.exe 85 Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 4948 2120 wmic.exe 85 -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" ab.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" ab.exe -
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (152) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Executes dropped EXE 1 IoCs
pid Process 3712 ab.exe -
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" ab.exe -
Drops desktop.ini file(s) 1 IoCs
description ioc Process File opened for modification \??\Z:\$RECYCLE.BIN\S-1-5-21-2231940048-779848787-2990559741-1000\desktop.ini ab.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\W: ab.exe File opened (read-only) \??\X: ab.exe File opened (read-only) \??\I: ab.exe File opened (read-only) \??\J: ab.exe File opened (read-only) \??\N: ab.exe File opened (read-only) \??\S: ab.exe File opened (read-only) \??\T: ab.exe File opened (read-only) \??\U: ab.exe File opened (read-only) \??\Y: ab.exe File opened (read-only) \??\Z: ab.exe File opened (read-only) \??\B: ab.exe File opened (read-only) \??\G: ab.exe File opened (read-only) \??\H: ab.exe File opened (read-only) \??\L: ab.exe File opened (read-only) \??\O: ab.exe File opened (read-only) \??\E: ab.exe File opened (read-only) \??\K: ab.exe File opened (read-only) \??\V: ab.exe File opened (read-only) \??\F: ab.exe File opened (read-only) \??\A: ab.exe File opened (read-only) \??\M: ab.exe File opened (read-only) \??\P: ab.exe File opened (read-only) \??\Q: ab.exe File opened (read-only) \??\R: ab.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe 2904 ab.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeIncreaseQuotaPrivilege 1236 wmic.exe Token: SeSecurityPrivilege 1236 wmic.exe Token: SeTakeOwnershipPrivilege 1236 wmic.exe Token: SeLoadDriverPrivilege 1236 wmic.exe Token: SeSystemProfilePrivilege 1236 wmic.exe Token: SeSystemtimePrivilege 1236 wmic.exe Token: SeProfSingleProcessPrivilege 1236 wmic.exe Token: SeIncBasePriorityPrivilege 1236 wmic.exe Token: SeCreatePagefilePrivilege 1236 wmic.exe Token: SeBackupPrivilege 1236 wmic.exe Token: SeRestorePrivilege 1236 wmic.exe Token: SeShutdownPrivilege 1236 wmic.exe Token: SeDebugPrivilege 1236 wmic.exe Token: SeSystemEnvironmentPrivilege 1236 wmic.exe Token: SeRemoteShutdownPrivilege 1236 wmic.exe Token: SeUndockPrivilege 1236 wmic.exe Token: SeManageVolumePrivilege 1236 wmic.exe Token: 33 1236 wmic.exe Token: 34 1236 wmic.exe Token: 35 1236 wmic.exe Token: 36 1236 wmic.exe Token: SeIncreaseQuotaPrivilege 4052 wmic.exe Token: SeSecurityPrivilege 4052 wmic.exe Token: SeTakeOwnershipPrivilege 4052 wmic.exe Token: SeLoadDriverPrivilege 4052 wmic.exe Token: SeSystemProfilePrivilege 4052 wmic.exe Token: SeSystemtimePrivilege 4052 wmic.exe Token: SeProfSingleProcessPrivilege 4052 wmic.exe Token: SeIncBasePriorityPrivilege 4052 wmic.exe Token: SeCreatePagefilePrivilege 4052 wmic.exe Token: SeBackupPrivilege 4052 wmic.exe Token: SeRestorePrivilege 4052 wmic.exe Token: SeShutdownPrivilege 4052 wmic.exe Token: SeDebugPrivilege 4052 wmic.exe Token: SeSystemEnvironmentPrivilege 4052 wmic.exe Token: SeRemoteShutdownPrivilege 4052 wmic.exe Token: SeUndockPrivilege 4052 wmic.exe Token: SeManageVolumePrivilege 4052 wmic.exe Token: 33 4052 wmic.exe Token: 34 4052 wmic.exe Token: 35 4052 wmic.exe Token: 36 4052 wmic.exe Token: SeIncreaseQuotaPrivilege 3384 wmic.exe Token: SeSecurityPrivilege 3384 wmic.exe Token: SeTakeOwnershipPrivilege 3384 wmic.exe Token: SeLoadDriverPrivilege 3384 wmic.exe Token: SeSystemProfilePrivilege 3384 wmic.exe Token: SeSystemtimePrivilege 3384 wmic.exe Token: SeProfSingleProcessPrivilege 3384 wmic.exe Token: SeIncBasePriorityPrivilege 3384 wmic.exe Token: SeCreatePagefilePrivilege 3384 wmic.exe Token: SeBackupPrivilege 3384 wmic.exe Token: SeRestorePrivilege 3384 wmic.exe Token: SeShutdownPrivilege 3384 wmic.exe Token: SeDebugPrivilege 3384 wmic.exe Token: SeSystemEnvironmentPrivilege 3384 wmic.exe Token: SeRemoteShutdownPrivilege 3384 wmic.exe Token: SeUndockPrivilege 3384 wmic.exe Token: SeManageVolumePrivilege 3384 wmic.exe Token: 33 3384 wmic.exe Token: 34 3384 wmic.exe Token: 35 3384 wmic.exe Token: 36 3384 wmic.exe Token: SeIncreaseQuotaPrivilege 4948 wmic.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 2904 wrote to memory of 3384 2904 ab.exe 91 PID 2904 wrote to memory of 3384 2904 ab.exe 91 PID 2904 wrote to memory of 3384 2904 ab.exe 91 PID 2904 wrote to memory of 3732 2904 ab.exe 97 PID 2904 wrote to memory of 3732 2904 ab.exe 97 PID 2904 wrote to memory of 3732 2904 ab.exe 97 PID 2904 wrote to memory of 1004 2904 ab.exe 99 PID 2904 wrote to memory of 1004 2904 ab.exe 99 PID 2904 wrote to memory of 1004 2904 ab.exe 99 -
System policy modification 1 TTPs 3 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLinkedConnections = "1" ab.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" ab.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "0" ab.exe -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\ab.exe"C:\Users\Admin\AppData\Local\Temp\ab.exe"1⤵
- UAC bypass
- Checks whether UAC is enabled
- Drops desktop.ini file(s)
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2904 -
C:\Windows\SysWOW64\Wbem\wmic.exewmic SHADOWCOPY DELETE /nointeractive2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3384
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C:\Windows\SysWOW64\Wbem\wmic.exewmic SHADOWCOPY DELETE /nointeractive2⤵PID:3732
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C:\Windows\SysWOW64\Wbem\wmic.exewmic SHADOWCOPY DELETE /nointeractive2⤵PID:1004
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C:\Windows\system32\wbem\wmic.exewmic SHADOWCOPY DELETE /nointeractive1⤵
- Process spawned unexpected child process
- Suspicious use of AdjustPrivilegeToken
PID:1236
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C:\Windows\system32\wbem\wmic.exewmic SHADOWCOPY DELETE /nointeractive1⤵
- Process spawned unexpected child process
- Suspicious use of AdjustPrivilegeToken
PID:4052
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C:\Windows\system32\wbem\wmic.exewmic SHADOWCOPY DELETE /nointeractive1⤵
- Process spawned unexpected child process
- Suspicious use of AdjustPrivilegeToken
PID:4948
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵PID:3380
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\ab.exeC:\Users\Admin\AppData\Roaming\Microsoft\Windows\ab.exe1⤵
- Executes dropped EXE
PID:3712
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
1Disable or Modify Tools
1Indicator Removal
1File Deletion
1Modify Registry
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
775KB
MD50b486fe0503524cfe4726a4022fa6a68
SHA1297dea71d489768ce45d23b0f8a45424b469ab00
SHA2561228d0f04f0ba82569fc1c0609f9fd6c377a91b9ea44c1e7f9f84b2b90552da2
SHA512f4273ca5cc3a9360af67f4b4ee0bf067cf218c5dc8caeafbfa1b809715effe742f2e1f54e4fe9ec8d4b8e3ae697d57f91c2b49bdf203648508d75d4a76f53619
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Filesize
775KB
MD50b486fe0503524cfe4726a4022fa6a68
SHA1297dea71d489768ce45d23b0f8a45424b469ab00
SHA2561228d0f04f0ba82569fc1c0609f9fd6c377a91b9ea44c1e7f9f84b2b90552da2
SHA512f4273ca5cc3a9360af67f4b4ee0bf067cf218c5dc8caeafbfa1b809715effe742f2e1f54e4fe9ec8d4b8e3ae697d57f91c2b49bdf203648508d75d4a76f53619
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Filesize
3KB
MD5a387b53b1249b34e042dedf19921f430
SHA10d7bc31cf4bb9e1a415387fd03cf7369b0665df1
SHA256b5da5779ffa3531128ecbf796c62e09242e9b7e462e868cd58b4e865fac387ca
SHA512d59d7de9a4efb55729b919f47880a4f83ca324a35fbd12eb6499494fdce55f70bedd475a77b58055d8d6adc2ff0dc36e286d9c7ce4ee6373c30975e77481ce63
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Filesize
3KB
MD5c15041c40b0fd6a67e572e807da000c5
SHA125ab3599edbc4f2a65719fefc1a631692423610a
SHA256fb2aad78bc70fc5156c833fd2591a0f8b91170da874050a716fd7ce6398a2216
SHA512eef63049e3fa6fcf92da1d05a80d9cadf7549544d53313a3510928660a977b898ea36df62e09dfb1ba407a0e0473f5f8ba793464a9a42a72f992e452f43df50a
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Filesize
3KB
MD59c684cae64bbd3bf9a7c76998f991663
SHA1560d400d641b7b19cbb17d1e94c08e3d9d54b957
SHA2569f525cdd328df6860aa631a5c946c507fc23969d6f2ac28c6bf1e2de8352f566
SHA512d69ab25d58d94d49196e6b340ad9d1003b733e176f2aee90c90456c842df5c317934837979f951bd51fdbcbc859a29a70769b39f210a32b9558632a92e3d5bd2
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Filesize
3KB
MD5b323dac712625ab8df370f783f0c6f58
SHA16762540021b6b3502e0925c6ab574e93925d1d0a
SHA25669457ed5d634838e9aec27a88428d600380d684c82779711690632c4f5cf7a35
SHA512251ede10a70ea8e3c7201dcdb05fc44a087fc6c7cfb5132ebb05cb00cb618550664ba82a7cc9cc23ef1fdda1d91b05e1c6c27c1f24f125470bebcc9a046be488