nymaim | 7e40fc14c6062358de6e24b42c103a4e2e22a6f0d6bf796b8544167b33eff2a5

Analysis

max time kernel
93s
max time network
96s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
09/12/2022, 22:32

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General

Target
file.exe
Size 2.1MB
Sample221209-2fycvaee79
SHA256 7e40fc14c6062358de6e24b42c103a4e2e22a6f0d6bf796b8544167b33eff2a5
MD5 fd8c81cca3db88ea6b4429af8bfc5c59
SHA1 672f4570332c691440edc7b1098137a7d43c4267
SHA512 31d7665668bbf3df8291b2f8bcfb7aad85421c34962053967ec2c5cd8d9ea83b555e2fe53ccc6ceda910a977bb6303b4b02d40235240b1db47cb13c07b7e62b8
SSDEEP 49152:Ktjxh431AEvLKEvEasRPEiW++Re0foQkXQNVeZG:KjuaVEJaEi1NNXieE
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171
85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
1092	is-S28QP.tmp
972	ntFolders.exe
944	rN0VtJI.exe

Loads dropped DLL 10 IoCs

pid	Process
1672	file.exe
1092	is-S28QP.tmp
1092	is-S28QP.tmp
1092	is-S28QP.tmp
1092	is-S28QP.tmp
972	ntFolders.exe
972	ntFolders.exe
972	ntFolders.exe
944	rN0VtJI.exe
944	rN0VtJI.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 9 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\PrintFolders\is-BGK89.tmp	is-S28QP.tmp
File created	C:\Program Files (x86)\PrintFolders\is-KJKNT.tmp	is-S28QP.tmp
File created	C:\Program Files (x86)\PrintFolders\is-EUI58.tmp	is-S28QP.tmp
File created	C:\Program Files (x86)\PrintFolders\is-6RIED.tmp	is-S28QP.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-S28QP.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\ntFolders.exe	is-S28QP.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-S28QP.tmp
File created	C:\Program Files (x86)\PrintFolders\is-L3988.tmp	is-S28QP.tmp
File created	C:\Program Files (x86)\PrintFolders\is-VJULH.tmp	is-S28QP.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
760	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
972	ntFolders.exe
972	ntFolders.exe
972	ntFolders.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	1092	is-S28QP.tmp
Token: SeBackupPrivilege	1092	is-S28QP.tmp
Token: SeDebugPrivilege	760	taskkill.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1672 wrote to memory of 1092	1672	file.exe	27
PID 1672 wrote to memory of 1092	1672	file.exe	27
PID 1672 wrote to memory of 1092	1672	file.exe	27
PID 1672 wrote to memory of 1092	1672	file.exe	27
PID 1672 wrote to memory of 1092	1672	file.exe	27
PID 1672 wrote to memory of 1092	1672	file.exe	27
PID 1672 wrote to memory of 1092	1672	file.exe	27
PID 1092 wrote to memory of 972	1092	is-S28QP.tmp	28
PID 1092 wrote to memory of 972	1092	is-S28QP.tmp	28
PID 1092 wrote to memory of 972	1092	is-S28QP.tmp	28
PID 1092 wrote to memory of 972	1092	is-S28QP.tmp	28
PID 1092 wrote to memory of 972	1092	is-S28QP.tmp	28
PID 1092 wrote to memory of 972	1092	is-S28QP.tmp	28
PID 1092 wrote to memory of 972	1092	is-S28QP.tmp	28
PID 972 wrote to memory of 944	972	ntFolders.exe	29
PID 972 wrote to memory of 944	972	ntFolders.exe	29
PID 972 wrote to memory of 944	972	ntFolders.exe	29
PID 972 wrote to memory of 944	972	ntFolders.exe	29
PID 972 wrote to memory of 944	972	ntFolders.exe	29
PID 972 wrote to memory of 944	972	ntFolders.exe	29
PID 972 wrote to memory of 944	972	ntFolders.exe	29
PID 972 wrote to memory of 1260	972	ntFolders.exe	32
PID 972 wrote to memory of 1260	972	ntFolders.exe	32
PID 972 wrote to memory of 1260	972	ntFolders.exe	32
PID 972 wrote to memory of 1260	972	ntFolders.exe	32
PID 972 wrote to memory of 1260	972	ntFolders.exe	32
PID 972 wrote to memory of 1260	972	ntFolders.exe	32
PID 972 wrote to memory of 1260	972	ntFolders.exe	32
PID 1260 wrote to memory of 760	1260	cmd.exe	34
PID 1260 wrote to memory of 760	1260	cmd.exe	34
PID 1260 wrote to memory of 760	1260	cmd.exe	34
PID 1260 wrote to memory of 760	1260	cmd.exe	34
PID 1260 wrote to memory of 760	1260	cmd.exe	34
PID 1260 wrote to memory of 760	1260	cmd.exe	34
PID 1260 wrote to memory of 760	1260	cmd.exe	34

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:1672
- C:\Users\Admin\AppData\Local\Temp\is-QVPFQ.tmp\is-S28QP.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-QVPFQ.tmp\is-S28QP.tmp" /SL4 $60122 "C:\Users\Admin\AppData\Local\Temp\file.exe" 1972032 96256
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1092
- - C:\Program Files (x86)\PrintFolders\ntFolders.exe
    "C:\Program Files (x86)\PrintFolders\ntFolders.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:972
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\rN0VtJI.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:944
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "ntFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\ntFolders.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1260
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "ntFolders.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:760

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

ntFolders.exe

Path C:\Program Files (x86)\PrintFolders\ntFolders.exe
Size 3.2MB
SHA256 72781a8905f8a221d5b768011c00bb434f2cfba6b87070b0c84631ea36a88166
MD5 3aeabb1a00a397e04704c55d27565fe5
SHA1 2852946ceb8ececad27eaa146fd8d4b62667d0b4
SHA512 d7fc3412d914523611b94cfb8d0ad8ca26379038f6fac798f25a7de726e898029241f1ffe4d4231febb98fe6f933b3450ebbb4819df2be56d87c6f6952b54b4d
SSDEEP 49152:p1pELbenTruS91Ihfk5qu8d+GVbH7b0NHXFJzGWb:p1pELbenTrD9aBkqu8dVbb0NHXFJ6Y
MD5 SHA1 SHA512 SSDEEP

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ntFolders.exe

Path C:\Program Files (x86)\PrintFolders\ntFolders.exe
Size 3.2MB
SHA256 72781a8905f8a221d5b768011c00bb434f2cfba6b87070b0c84631ea36a88166
MD5 3aeabb1a00a397e04704c55d27565fe5
SHA1 2852946ceb8ececad27eaa146fd8d4b62667d0b4
SHA512 d7fc3412d914523611b94cfb8d0ad8ca26379038f6fac798f25a7de726e898029241f1ffe4d4231febb98fe6f933b3450ebbb4819df2be56d87c6f6952b54b4d
SSDEEP 49152:p1pELbenTruS91Ihfk5qu8d+GVbH7b0NHXFJzGWb:p1pELbenTrD9aBkqu8dVbb0NHXFJ6Y
MD5 SHA1 SHA512 SSDEEP

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is-S28QP.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-QVPFQ.tmp\is-S28QP.tmp
Size 687KB
SHA256 2820d4bdbd9cab3eee82c86b11cfb2b8ec55247bcb975331078ecd182c1471b2
MD5 2c3832fdf847813369ec960cd39c8265
SHA1 35b24c0b451e987c1e2b07b670a65fbcb02b118c
SHA512 408a642264e967aaa78cc7b58529aaa152ba85af12a4dc7dba0a82e560e08299031cb45d8de78e5fa26f03fc6db863344aaa68e010f7ddda4fc29501365d986a
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvo6xOM:y5NoqWolrP837JzHvA6yknyWFxvVxOM
MD5 SHA1 SHA512 SSDEEP

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is-S28QP.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-QVPFQ.tmp\is-S28QP.tmp
Size 687KB
SHA256 2820d4bdbd9cab3eee82c86b11cfb2b8ec55247bcb975331078ecd182c1471b2
MD5 2c3832fdf847813369ec960cd39c8265
SHA1 35b24c0b451e987c1e2b07b670a65fbcb02b118c
SHA512 408a642264e967aaa78cc7b58529aaa152ba85af12a4dc7dba0a82e560e08299031cb45d8de78e5fa26f03fc6db863344aaa68e010f7ddda4fc29501365d986a
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvo6xOM:y5NoqWolrP837JzHvA6yknyWFxvVxOM
MD5 SHA1 SHA512 SSDEEP

Submit Download

rN0VtJI.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\rN0VtJI.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

rN0VtJI.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\rN0VtJI.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

ntFolders.exe

Path \Program Files (x86)\PrintFolders\ntFolders.exe
Size 3.2MB
SHA256 72781a8905f8a221d5b768011c00bb434f2cfba6b87070b0c84631ea36a88166
MD5 3aeabb1a00a397e04704c55d27565fe5
SHA1 2852946ceb8ececad27eaa146fd8d4b62667d0b4
SHA512 d7fc3412d914523611b94cfb8d0ad8ca26379038f6fac798f25a7de726e898029241f1ffe4d4231febb98fe6f933b3450ebbb4819df2be56d87c6f6952b54b4d
SSDEEP 49152:p1pELbenTruS91Ihfk5qu8d+GVbH7b0NHXFJzGWb:p1pELbenTrD9aBkqu8dVbb0NHXFJ6Y
MD5 SHA1 SHA512 SSDEEP

Submit Download

ntFolders.exe

Path \Program Files (x86)\PrintFolders\ntFolders.exe
Size 3.2MB
SHA256 72781a8905f8a221d5b768011c00bb434f2cfba6b87070b0c84631ea36a88166
MD5 3aeabb1a00a397e04704c55d27565fe5
SHA1 2852946ceb8ececad27eaa146fd8d4b62667d0b4
SHA512 d7fc3412d914523611b94cfb8d0ad8ca26379038f6fac798f25a7de726e898029241f1ffe4d4231febb98fe6f933b3450ebbb4819df2be56d87c6f6952b54b4d
SSDEEP 49152:p1pELbenTruS91Ihfk5qu8d+GVbH7b0NHXFJzGWb:p1pELbenTrD9aBkqu8dVbb0NHXFJ6Y
MD5 SHA1 SHA512 SSDEEP

Submit Download

ntFolders.exe

Path \Program Files (x86)\PrintFolders\ntFolders.exe
Size 3.2MB
SHA256 72781a8905f8a221d5b768011c00bb434f2cfba6b87070b0c84631ea36a88166
MD5 3aeabb1a00a397e04704c55d27565fe5
SHA1 2852946ceb8ececad27eaa146fd8d4b62667d0b4
SHA512 d7fc3412d914523611b94cfb8d0ad8ca26379038f6fac798f25a7de726e898029241f1ffe4d4231febb98fe6f933b3450ebbb4819df2be56d87c6f6952b54b4d
SSDEEP 49152:p1pELbenTruS91Ihfk5qu8d+GVbH7b0NHXFJzGWb:p1pELbenTrD9aBkqu8dVbb0NHXFJ6Y
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-QMS7Q.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-QMS7Q.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-QMS7Q.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-S28QP.tmp

Path \Users\Admin\AppData\Local\Temp\is-QVPFQ.tmp\is-S28QP.tmp
Size 687KB
SHA256 2820d4bdbd9cab3eee82c86b11cfb2b8ec55247bcb975331078ecd182c1471b2
MD5 2c3832fdf847813369ec960cd39c8265
SHA1 35b24c0b451e987c1e2b07b670a65fbcb02b118c
SHA512 408a642264e967aaa78cc7b58529aaa152ba85af12a4dc7dba0a82e560e08299031cb45d8de78e5fa26f03fc6db863344aaa68e010f7ddda4fc29501365d986a
SSDEEP 12288:gh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvo6xOM:y5NoqWolrP837JzHvA6yknyWFxvVxOM
MD5 SHA1 SHA512 SSDEEP

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rN0VtJI.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\rN0VtJI.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

rN0VtJI.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\rN0VtJI.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

rN0VtJI.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\rN0VtJI.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/972-85-0x0000000000400000-0x000000000153F000-memory.dmp

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memory/972-76-0x0000000001E30000-0x0000000002F6F000-memory.dmp

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memory/972-77-0x0000000000400000-0x000000000153F000-memory.dmp

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memory/972-78-0x0000000000400000-0x000000000153F000-memory.dmp

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memory/972-96-0x0000000000400000-0x000000000153F000-memory.dmp

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memory/972-81-0x0000000000400000-0x000000000153F000-memory.dmp

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memory/972-75-0x0000000001E30000-0x0000000002F6F000-memory.dmp

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memory/972-74-0x0000000000400000-0x000000000153F000-memory.dmp

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memory/972-90-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1092-70-0x0000000003180000-0x00000000042BF000-memory.dmp

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memory/1092-80-0x0000000003180000-0x00000000042BF000-memory.dmp

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memory/1672-55-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/1672-54-0x0000000075201000-0x0000000075203000-memory.dmp

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memory/1672-57-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/1672-79-0x0000000000400000-0x000000000041E000-memory.dmp

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memory/1672-98-0x0000000000400000-0x000000000041E000-memory.dmp

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