c4b795ca9f3c7b8ebabacaae19f54339b079d5ba2ff377d71f0fd8f23092f059

Analysis

max time kernel
53s
max time network
55s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
02/01/2023, 17:10

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General

Target
file.exe
Size 1.8MB
Sample230102-vppnqsab3t
SHA256 c4b795ca9f3c7b8ebabacaae19f54339b079d5ba2ff377d71f0fd8f23092f059
MD5 5de58dbe3d470b7dcb542d2e834f19f7
SHA1 11308956ccffd94dceb1cbac3f77cd5e82eba3ac
SHA512 7968a1c9aceafaa36a70e62bba0c47771c9aab93b63f379a33ca9cdb1e11f177c185fc5b0c8869082ddc3e37c1fffe2b578e0c71b7e049d1a29753a93427172f
SSDEEP 49152:oi/lHOPXbTlyG7s/dVd/51oBhTQW2D3FoT1MSBk3Y:oi/lkTxsFVfyDAVxSBk3Y
MD5 SHA1 SHA512 SSDEEP

Score

8^/10

discovery

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
940	is-4DHO1.tmp
860	SplitFiles128.exe
1640	QLWVA.exe

Loads dropped DLL 10 IoCs

pid	Process
2040	file.exe
940	is-4DHO1.tmp
940	is-4DHO1.tmp
940	is-4DHO1.tmp
940	is-4DHO1.tmp
860	SplitFiles128.exe
860	SplitFiles128.exe
860	SplitFiles128.exe
1640	QLWVA.exe
1640	QLWVA.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 17 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Split Files\SplitFiles128.exe	is-4DHO1.tmp
File created	C:\Program Files (x86)\Split Files\language\is-RQ90J.tmp	is-4DHO1.tmp
File created	C:\Program Files (x86)\Split Files\language\is-R0BVJ.tmp	is-4DHO1.tmp
File created	C:\Program Files (x86)\Split Files\language\is-26C16.tmp	is-4DHO1.tmp
File created	C:\Program Files (x86)\Split Files\language\is-06LU9.tmp	is-4DHO1.tmp
File created	C:\Program Files (x86)\Split Files\is-TGN8B.tmp	is-4DHO1.tmp
File created	C:\Program Files (x86)\Split Files\is-DH86U.tmp	is-4DHO1.tmp
File created	C:\Program Files (x86)\Split Files\language\is-C0FC4.tmp	is-4DHO1.tmp
File created	C:\Program Files (x86)\Split Files\is-BFOT3.tmp	is-4DHO1.tmp
File created	C:\Program Files (x86)\Split Files\unins000.dat	is-4DHO1.tmp
File created	C:\Program Files (x86)\Split Files\is-FFDTF.tmp	is-4DHO1.tmp
File created	C:\Program Files (x86)\Split Files\is-5VPGP.tmp	is-4DHO1.tmp
File created	C:\Program Files (x86)\Split Files\language\is-R6JA7.tmp	is-4DHO1.tmp
File created	C:\Program Files (x86)\Split Files\language\is-39NFH.tmp	is-4DHO1.tmp
File created	C:\Program Files (x86)\Split Files\language\is-6R94L.tmp	is-4DHO1.tmp
File created	C:\Program Files (x86)\Split Files\language\is-JVO04.tmp	is-4DHO1.tmp
File opened for modification	C:\Program Files (x86)\Split Files\unins000.dat	is-4DHO1.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
1220	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
860	SplitFiles128.exe
860	SplitFiles128.exe
860	SplitFiles128.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1220	taskkill.exe
Token: SeRestorePrivilege	940	is-4DHO1.tmp
Token: SeBackupPrivilege	940	is-4DHO1.tmp

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 940	2040	file.exe	28
PID 2040 wrote to memory of 940	2040	file.exe	28
PID 2040 wrote to memory of 940	2040	file.exe	28
PID 2040 wrote to memory of 940	2040	file.exe	28
PID 2040 wrote to memory of 940	2040	file.exe	28
PID 2040 wrote to memory of 940	2040	file.exe	28
PID 2040 wrote to memory of 940	2040	file.exe	28
PID 940 wrote to memory of 860	940	is-4DHO1.tmp	29
PID 940 wrote to memory of 860	940	is-4DHO1.tmp	29
PID 940 wrote to memory of 860	940	is-4DHO1.tmp	29
PID 940 wrote to memory of 860	940	is-4DHO1.tmp	29
PID 940 wrote to memory of 860	940	is-4DHO1.tmp	29
PID 940 wrote to memory of 860	940	is-4DHO1.tmp	29
PID 940 wrote to memory of 860	940	is-4DHO1.tmp	29
PID 860 wrote to memory of 1640	860	SplitFiles128.exe	30
PID 860 wrote to memory of 1640	860	SplitFiles128.exe	30
PID 860 wrote to memory of 1640	860	SplitFiles128.exe	30
PID 860 wrote to memory of 1640	860	SplitFiles128.exe	30
PID 860 wrote to memory of 1640	860	SplitFiles128.exe	30
PID 860 wrote to memory of 1640	860	SplitFiles128.exe	30
PID 860 wrote to memory of 1640	860	SplitFiles128.exe	30
PID 860 wrote to memory of 1844	860	SplitFiles128.exe	33
PID 860 wrote to memory of 1844	860	SplitFiles128.exe	33
PID 860 wrote to memory of 1844	860	SplitFiles128.exe	33
PID 860 wrote to memory of 1844	860	SplitFiles128.exe	33
PID 860 wrote to memory of 1844	860	SplitFiles128.exe	33
PID 860 wrote to memory of 1844	860	SplitFiles128.exe	33
PID 860 wrote to memory of 1844	860	SplitFiles128.exe	33
PID 1844 wrote to memory of 1220	1844	cmd.exe	35
PID 1844 wrote to memory of 1220	1844	cmd.exe	35
PID 1844 wrote to memory of 1220	1844	cmd.exe	35
PID 1844 wrote to memory of 1220	1844	cmd.exe	35
PID 1844 wrote to memory of 1220	1844	cmd.exe	35
PID 1844 wrote to memory of 1220	1844	cmd.exe	35
PID 1844 wrote to memory of 1220	1844	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Users\Admin\AppData\Local\Temp\is-T0JAN.tmp\is-4DHO1.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-T0JAN.tmp\is-4DHO1.tmp" /SL4 $7012C "C:\Users\Admin\AppData\Local\Temp\file.exe" 1614851 93184
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:940
- - C:\Program Files (x86)\Split Files\SplitFiles128.exe
    "C:\Program Files (x86)\Split Files\SplitFiles128.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:860
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\QLWVA.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:1640
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "SplitFiles128.exe" /f & erase "C:\Program Files (x86)\Split Files\SplitFiles128.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1844
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "SplitFiles128.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1220

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

SplitFiles128.exe

Path C:\Program Files (x86)\Split Files\SplitFiles128.exe
Size 3.3MB
SHA256 b249da790d9cc65fa02a619d9415355560daffd9c6256ab030101d5e409746ab
MD5 2a99aab27860b8cf181cd27fb7572548
SHA1 e3ce8c6655fd6f9685956d5866cabd06498ce96a
SHA512 091f6384e86010eb5ec0e80ba442a5accca417eb2360f2f539a606ea333abf29a1b1c81d2704b090f11bb507e4fac7682b8417e12ebb26c159d35a122e4e198a
SSDEEP 98304:LwWJDjSSUx/fVc+iM8zHrmUvIQfgrDww6Ghe6:LwWJDjSSU/ki0E
MD5 SHA1 SHA512 SSDEEP

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SplitFiles128.exe

Path C:\Program Files (x86)\Split Files\SplitFiles128.exe
Size 3.3MB
SHA256 b249da790d9cc65fa02a619d9415355560daffd9c6256ab030101d5e409746ab
MD5 2a99aab27860b8cf181cd27fb7572548
SHA1 e3ce8c6655fd6f9685956d5866cabd06498ce96a
SHA512 091f6384e86010eb5ec0e80ba442a5accca417eb2360f2f539a606ea333abf29a1b1c81d2704b090f11bb507e4fac7682b8417e12ebb26c159d35a122e4e198a
SSDEEP 98304:LwWJDjSSUx/fVc+iM8zHrmUvIQfgrDww6Ghe6:LwWJDjSSU/ki0E
MD5 SHA1 SHA512 SSDEEP

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is-4DHO1.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-T0JAN.tmp\is-4DHO1.tmp
Size 685KB
SHA256 3c65b17529d5a22bbcb9f726f567f3a0506f6536bc5048789fd2f11c420ffd5e
MD5 7f46188bafe719b5ba8e32c2e0037f21
SHA1 6dc19d768f6b24766cfcdf49f630b517174c780e
SHA512 5c14cf51850c1e02765e86f7a166e7554425c3399e979ff75397a1c430e1c5099545eddd51e65b06790fb3cc9cbb70b70749438ec3277deba5a0eb4c3beb2bc3
SSDEEP 12288:tpmOmg1k2bfrP437QzH/A6A40lG77NzknuGyebgFxOs:bmt2bfrP437QzH/A6A7E7dVPebgFxOs
MD5 SHA1 SHA512 SSDEEP

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is-4DHO1.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-T0JAN.tmp\is-4DHO1.tmp
Size 685KB
SHA256 3c65b17529d5a22bbcb9f726f567f3a0506f6536bc5048789fd2f11c420ffd5e
MD5 7f46188bafe719b5ba8e32c2e0037f21
SHA1 6dc19d768f6b24766cfcdf49f630b517174c780e
SHA512 5c14cf51850c1e02765e86f7a166e7554425c3399e979ff75397a1c430e1c5099545eddd51e65b06790fb3cc9cbb70b70749438ec3277deba5a0eb4c3beb2bc3
SSDEEP 12288:tpmOmg1k2bfrP437QzH/A6A40lG77NzknuGyebgFxOs:bmt2bfrP437QzH/A6A7E7dVPebgFxOs
MD5 SHA1 SHA512 SSDEEP

Submit Download

QLWVA.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\QLWVA.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

QLWVA.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\QLWVA.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

SplitFiles128.exe

Path \Program Files (x86)\Split Files\SplitFiles128.exe
Size 3.3MB
SHA256 b249da790d9cc65fa02a619d9415355560daffd9c6256ab030101d5e409746ab
MD5 2a99aab27860b8cf181cd27fb7572548
SHA1 e3ce8c6655fd6f9685956d5866cabd06498ce96a
SHA512 091f6384e86010eb5ec0e80ba442a5accca417eb2360f2f539a606ea333abf29a1b1c81d2704b090f11bb507e4fac7682b8417e12ebb26c159d35a122e4e198a
SSDEEP 98304:LwWJDjSSUx/fVc+iM8zHrmUvIQfgrDww6Ghe6:LwWJDjSSU/ki0E
MD5 SHA1 SHA512 SSDEEP

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SplitFiles128.exe

Path \Program Files (x86)\Split Files\SplitFiles128.exe
Size 3.3MB
SHA256 b249da790d9cc65fa02a619d9415355560daffd9c6256ab030101d5e409746ab
MD5 2a99aab27860b8cf181cd27fb7572548
SHA1 e3ce8c6655fd6f9685956d5866cabd06498ce96a
SHA512 091f6384e86010eb5ec0e80ba442a5accca417eb2360f2f539a606ea333abf29a1b1c81d2704b090f11bb507e4fac7682b8417e12ebb26c159d35a122e4e198a
SSDEEP 98304:LwWJDjSSUx/fVc+iM8zHrmUvIQfgrDww6Ghe6:LwWJDjSSU/ki0E
MD5 SHA1 SHA512 SSDEEP

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SplitFiles128.exe

Path \Program Files (x86)\Split Files\SplitFiles128.exe
Size 3.3MB
SHA256 b249da790d9cc65fa02a619d9415355560daffd9c6256ab030101d5e409746ab
MD5 2a99aab27860b8cf181cd27fb7572548
SHA1 e3ce8c6655fd6f9685956d5866cabd06498ce96a
SHA512 091f6384e86010eb5ec0e80ba442a5accca417eb2360f2f539a606ea333abf29a1b1c81d2704b090f11bb507e4fac7682b8417e12ebb26c159d35a122e4e198a
SSDEEP 98304:LwWJDjSSUx/fVc+iM8zHrmUvIQfgrDww6Ghe6:LwWJDjSSU/ki0E
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-PAGHR.tmp\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-PAGHR.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

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_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-PAGHR.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

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is-4DHO1.tmp

Path \Users\Admin\AppData\Local\Temp\is-T0JAN.tmp\is-4DHO1.tmp
Size 685KB
SHA256 3c65b17529d5a22bbcb9f726f567f3a0506f6536bc5048789fd2f11c420ffd5e
MD5 7f46188bafe719b5ba8e32c2e0037f21
SHA1 6dc19d768f6b24766cfcdf49f630b517174c780e
SHA512 5c14cf51850c1e02765e86f7a166e7554425c3399e979ff75397a1c430e1c5099545eddd51e65b06790fb3cc9cbb70b70749438ec3277deba5a0eb4c3beb2bc3
SSDEEP 12288:tpmOmg1k2bfrP437QzH/A6A40lG77NzknuGyebgFxOs:bmt2bfrP437QzH/A6A7E7dVPebgFxOs
MD5 SHA1 SHA512 SSDEEP

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QLWVA.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\QLWVA.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

QLWVA.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\QLWVA.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

QLWVA.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\QLWVA.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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memory/860-73-0x0000000000400000-0x0000000001552000-memory.dmp

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memory/860-89-0x0000000000400000-0x0000000001552000-memory.dmp

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memory/860-81-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/2040-55-0x0000000000400000-0x000000000041D000-memory.dmp

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memory/2040-54-0x00000000753F1000-0x00000000753F3000-memory.dmp

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memory/2040-68-0x0000000000400000-0x000000000041D000-memory.dmp

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