nymaim | 93f2dcea106d3798cce32160f42663f578bb1ccc102ee9faa1176f2210fa26ba

Analysis

max time kernel
59s
max time network
61s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
17/12/2022, 06:31

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General

Target
file.exe
Size 2.3MB
Sample221217-g92bdabb2t
SHA256 93f2dcea106d3798cce32160f42663f578bb1ccc102ee9faa1176f2210fa26ba
MD5 f29c7d7be6ec7d570f63e161d6bb189a
SHA1 92e87f6a132bc2a0aaa53d8243a7d15ca06de740
SHA512 3d4aee1baadc17eb18fbe398a781c091c4a58cca66e3807ad719f8ea81fc3ed89c1bccf37441012e210441dd6c7bc50a09c6d22419dee2bd0ab2c751a17a82a9
SSDEEP 49152:JfyqDxdex+w1Lu2IWChUSK9/qxEp2ppkHeoJainyXrXyxA3:J6qG+wkzG/TSqeoTyXriS
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
1964	is-8SOTP.tmp
956	obFolders.exe
1500	TdREI7hiMv6u.exe

Loads dropped DLL 10 IoCs

pid	Process
1644	file.exe
1964	is-8SOTP.tmp
1964	is-8SOTP.tmp
1964	is-8SOTP.tmp
1964	is-8SOTP.tmp
956	obFolders.exe
956	obFolders.exe
956	obFolders.exe
1500	TdREI7hiMv6u.exe
1500	TdREI7hiMv6u.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-3HP2T.tmp	is-8SOTP.tmp
File created	C:\Program Files (x86)\PrintFolders\is-M80T1.tmp	is-8SOTP.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-8SOTP.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\obFolders.exe	is-8SOTP.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-8SOTP.tmp
File created	C:\Program Files (x86)\PrintFolders\is-JP2PU.tmp	is-8SOTP.tmp
File created	C:\Program Files (x86)\PrintFolders\is-0IA1S.tmp	is-8SOTP.tmp
File created	C:\Program Files (x86)\PrintFolders\is-SNA5C.tmp	is-8SOTP.tmp
File created	C:\Program Files (x86)\PrintFolders\is-N9GTQ.tmp	is-8SOTP.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
820	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
956	obFolders.exe
956	obFolders.exe
956	obFolders.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	820	taskkill.exe
Token: SeRestorePrivilege	1964	is-8SOTP.tmp
Token: SeBackupPrivilege	1964	is-8SOTP.tmp

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1644 wrote to memory of 1964	1644	file.exe	28
PID 1644 wrote to memory of 1964	1644	file.exe	28
PID 1644 wrote to memory of 1964	1644	file.exe	28
PID 1644 wrote to memory of 1964	1644	file.exe	28
PID 1644 wrote to memory of 1964	1644	file.exe	28
PID 1644 wrote to memory of 1964	1644	file.exe	28
PID 1644 wrote to memory of 1964	1644	file.exe	28
PID 1964 wrote to memory of 956	1964	is-8SOTP.tmp	29
PID 1964 wrote to memory of 956	1964	is-8SOTP.tmp	29
PID 1964 wrote to memory of 956	1964	is-8SOTP.tmp	29
PID 1964 wrote to memory of 956	1964	is-8SOTP.tmp	29
PID 1964 wrote to memory of 956	1964	is-8SOTP.tmp	29
PID 1964 wrote to memory of 956	1964	is-8SOTP.tmp	29
PID 1964 wrote to memory of 956	1964	is-8SOTP.tmp	29
PID 956 wrote to memory of 1500	956	obFolders.exe	30
PID 956 wrote to memory of 1500	956	obFolders.exe	30
PID 956 wrote to memory of 1500	956	obFolders.exe	30
PID 956 wrote to memory of 1500	956	obFolders.exe	30
PID 956 wrote to memory of 1500	956	obFolders.exe	30
PID 956 wrote to memory of 1500	956	obFolders.exe	30
PID 956 wrote to memory of 1500	956	obFolders.exe	30
PID 956 wrote to memory of 1172	956	obFolders.exe	33
PID 956 wrote to memory of 1172	956	obFolders.exe	33
PID 956 wrote to memory of 1172	956	obFolders.exe	33
PID 956 wrote to memory of 1172	956	obFolders.exe	33
PID 956 wrote to memory of 1172	956	obFolders.exe	33
PID 956 wrote to memory of 1172	956	obFolders.exe	33
PID 956 wrote to memory of 1172	956	obFolders.exe	33
PID 1172 wrote to memory of 820	1172	cmd.exe	35
PID 1172 wrote to memory of 820	1172	cmd.exe	35
PID 1172 wrote to memory of 820	1172	cmd.exe	35
PID 1172 wrote to memory of 820	1172	cmd.exe	35
PID 1172 wrote to memory of 820	1172	cmd.exe	35
PID 1172 wrote to memory of 820	1172	cmd.exe	35
PID 1172 wrote to memory of 820	1172	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:1644
- C:\Users\Admin\AppData\Local\Temp\is-N9NU7.tmp\is-8SOTP.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-N9NU7.tmp\is-8SOTP.tmp" /SL4 $7014E "C:\Users\Admin\AppData\Local\Temp\file.exe" 2133216 169472
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1964
- - C:\Program Files (x86)\PrintFolders\obFolders.exe
    "C:\Program Files (x86)\PrintFolders\obFolders.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:956
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\TdREI7hiMv6u.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:1500
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "obFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\obFolders.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1172
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "obFolders.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:820

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

obFolders.exe

Path C:\Program Files (x86)\PrintFolders\obFolders.exe
Size 3.5MB
SHA256 d5ed7d51fd4655478d671483667d08f2c870cd0d0a6d783d6fb8ccfcc104862b
MD5 7b362b122abaa7d203b48af8fb965996
SHA1 9cfbfc951e0082ddff629c196a6bb06f1eae0719
SHA512 a069d9199e1af5ac65908a8052b26b044d673f57ff57dee4722246da92a6fb3295c8d3548e279eda387495a3958551e015f3fb16b57896b115afb656dd8d40ca
SSDEEP 98304:2zda9fBwNBffxjjAOK+/4Ztl/L1/MI9vuc7kWB:BaffIfv
MD5 SHA1 SHA512 SSDEEP

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obFolders.exe

Path C:\Program Files (x86)\PrintFolders\obFolders.exe
Size 3.5MB
SHA256 d5ed7d51fd4655478d671483667d08f2c870cd0d0a6d783d6fb8ccfcc104862b
MD5 7b362b122abaa7d203b48af8fb965996
SHA1 9cfbfc951e0082ddff629c196a6bb06f1eae0719
SHA512 a069d9199e1af5ac65908a8052b26b044d673f57ff57dee4722246da92a6fb3295c8d3548e279eda387495a3958551e015f3fb16b57896b115afb656dd8d40ca
SSDEEP 98304:2zda9fBwNBffxjjAOK+/4Ztl/L1/MI9vuc7kWB:BaffIfv
MD5 SHA1 SHA512 SSDEEP

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is-8SOTP.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-N9NU7.tmp\is-8SOTP.tmp
Size 759KB
SHA256 11ec35b1fea3160e892f0875034a2f18cf0d8d8874ac611b5a7e0f0ace2667ec
MD5 0dc8826072fc99382be7db6ae5929aff
SHA1 7ca23e146bf9bde712b27e400de3243e6bd0a357
SHA512 08db35c065b9b8f740242587f35a3c0ba772993d8132589fe26bafa9bab31d6c5aecae62490a22e135d64ce6b54c26e553534e5d9d6e01d6be8472f471bdf442
SSDEEP 12288:dh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvsZ6ZkkxOZ:D5NoqWolrP837JzHvA6yknyWFxvlZkkE
MD5 SHA1 SHA512 SSDEEP

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is-8SOTP.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-N9NU7.tmp\is-8SOTP.tmp
Size 759KB
SHA256 11ec35b1fea3160e892f0875034a2f18cf0d8d8874ac611b5a7e0f0ace2667ec
MD5 0dc8826072fc99382be7db6ae5929aff
SHA1 7ca23e146bf9bde712b27e400de3243e6bd0a357
SHA512 08db35c065b9b8f740242587f35a3c0ba772993d8132589fe26bafa9bab31d6c5aecae62490a22e135d64ce6b54c26e553534e5d9d6e01d6be8472f471bdf442
SSDEEP 12288:dh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvsZ6ZkkxOZ:D5NoqWolrP837JzHvA6yknyWFxvlZkkE
MD5 SHA1 SHA512 SSDEEP

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TdREI7hiMv6u.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\TdREI7hiMv6u.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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TdREI7hiMv6u.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\TdREI7hiMv6u.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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obFolders.exe

Path \Program Files (x86)\PrintFolders\obFolders.exe
Size 3.5MB
SHA256 d5ed7d51fd4655478d671483667d08f2c870cd0d0a6d783d6fb8ccfcc104862b
MD5 7b362b122abaa7d203b48af8fb965996
SHA1 9cfbfc951e0082ddff629c196a6bb06f1eae0719
SHA512 a069d9199e1af5ac65908a8052b26b044d673f57ff57dee4722246da92a6fb3295c8d3548e279eda387495a3958551e015f3fb16b57896b115afb656dd8d40ca
SSDEEP 98304:2zda9fBwNBffxjjAOK+/4Ztl/L1/MI9vuc7kWB:BaffIfv
MD5 SHA1 SHA512 SSDEEP

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obFolders.exe

Path \Program Files (x86)\PrintFolders\obFolders.exe
Size 3.5MB
SHA256 d5ed7d51fd4655478d671483667d08f2c870cd0d0a6d783d6fb8ccfcc104862b
MD5 7b362b122abaa7d203b48af8fb965996
SHA1 9cfbfc951e0082ddff629c196a6bb06f1eae0719
SHA512 a069d9199e1af5ac65908a8052b26b044d673f57ff57dee4722246da92a6fb3295c8d3548e279eda387495a3958551e015f3fb16b57896b115afb656dd8d40ca
SSDEEP 98304:2zda9fBwNBffxjjAOK+/4Ztl/L1/MI9vuc7kWB:BaffIfv
MD5 SHA1 SHA512 SSDEEP

Submit Download

obFolders.exe

Path \Program Files (x86)\PrintFolders\obFolders.exe
Size 3.5MB
SHA256 d5ed7d51fd4655478d671483667d08f2c870cd0d0a6d783d6fb8ccfcc104862b
MD5 7b362b122abaa7d203b48af8fb965996
SHA1 9cfbfc951e0082ddff629c196a6bb06f1eae0719
SHA512 a069d9199e1af5ac65908a8052b26b044d673f57ff57dee4722246da92a6fb3295c8d3548e279eda387495a3958551e015f3fb16b57896b115afb656dd8d40ca
SSDEEP 98304:2zda9fBwNBffxjjAOK+/4Ztl/L1/MI9vuc7kWB:BaffIfv
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-4LTHK.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-4LTHK.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-4LTHK.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-8SOTP.tmp

Path \Users\Admin\AppData\Local\Temp\is-N9NU7.tmp\is-8SOTP.tmp
Size 759KB
SHA256 11ec35b1fea3160e892f0875034a2f18cf0d8d8874ac611b5a7e0f0ace2667ec
MD5 0dc8826072fc99382be7db6ae5929aff
SHA1 7ca23e146bf9bde712b27e400de3243e6bd0a357
SHA512 08db35c065b9b8f740242587f35a3c0ba772993d8132589fe26bafa9bab31d6c5aecae62490a22e135d64ce6b54c26e553534e5d9d6e01d6be8472f471bdf442
SSDEEP 12288:dh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvsZ6ZkkxOZ:D5NoqWolrP837JzHvA6yknyWFxvlZkkE
MD5 SHA1 SHA512 SSDEEP

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TdREI7hiMv6u.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\TdREI7hiMv6u.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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TdREI7hiMv6u.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\TdREI7hiMv6u.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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TdREI7hiMv6u.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\TdREI7hiMv6u.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/956-78-0x0000000000400000-0x000000000158A000-memory.dmp

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memory/956-91-0x0000000000400000-0x000000000158A000-memory.dmp

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memory/956-76-0x0000000001B80000-0x0000000002D0A000-memory.dmp

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memory/956-77-0x0000000000400000-0x000000000158A000-memory.dmp

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memory/956-74-0x0000000000400000-0x000000000158A000-memory.dmp

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memory/956-98-0x0000000000400000-0x000000000158A000-memory.dmp

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memory/956-93-0x0000000001B80000-0x0000000002D0A000-memory.dmp

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memory/956-92-0x0000000001B80000-0x0000000002D0A000-memory.dmp

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memory/956-75-0x0000000001B80000-0x0000000002D0A000-memory.dmp

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memory/956-86-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1644-55-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/1644-69-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/1644-54-0x0000000075A11000-0x0000000075A13000-memory.dmp

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memory/1644-99-0x0000000000400000-0x0000000000430000-memory.dmp

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memory/1964-88-0x0000000002F20000-0x00000000040AA000-memory.dmp

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memory/1964-73-0x0000000002F20000-0x00000000040AA000-memory.dmp

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