nymaim | a5d064eb33a7ca6006dd27f653e8b0eaf443ff69521cd6453aa01dac8b5e0ad3

Analysis

max time kernel
65s
max time network
68s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
20/10/2022, 14:19

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General

Target
file.exe
Size 2.2MB
Sample221020-rmtm5agher
SHA256 a5d064eb33a7ca6006dd27f653e8b0eaf443ff69521cd6453aa01dac8b5e0ad3
MD5 064c1cfa7f637707896f1cb4f0698fc4
SHA1 604432a811cd5cbad28f917d2af8a073e2f735e8
SHA512 43d00a5e0ee503074c14b9f485e3b2584e7f8ae47110fd14b971a4f38178004c4737dafb1e39454675c73e4ab9118a627975b9d39cfc78da744ce687a344e003
SSDEEP 49152:Z2nj3vZPEXraM+V44UR+iZRHI0iKVcI0XjZNh+7UviA5c1SXXK8A5hq:MnLeXrFOrUkiZ2KVcHXNNc7Uvt/yDq
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
2016	is-2G0AN.tmp
1372	elsearcher54.exe
744	Q594Nuzt.exe

Loads dropped DLL 6 IoCs

pid	Process
1900	file.exe
2016	is-2G0AN.tmp
2016	is-2G0AN.tmp
2016	is-2G0AN.tmp
2016	is-2G0AN.tmp
1372	elsearcher54.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 12 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\elSearcher\is-5VTFP.tmp	is-2G0AN.tmp
File created	C:\Program Files (x86)\elSearcher\is-87FN1.tmp	is-2G0AN.tmp
File created	C:\Program Files (x86)\elSearcher\is-5T84H.tmp	is-2G0AN.tmp
File created	C:\Program Files (x86)\elSearcher\is-HASMA.tmp	is-2G0AN.tmp
File created	C:\Program Files (x86)\elSearcher\is-DLJRF.tmp	is-2G0AN.tmp
File created	C:\Program Files (x86)\elSearcher\is-4E77V.tmp	is-2G0AN.tmp
File opened for modification	C:\Program Files (x86)\elSearcher\unins000.dat	is-2G0AN.tmp
File created	C:\Program Files (x86)\elSearcher\unins000.dat	is-2G0AN.tmp
File created	C:\Program Files (x86)\elSearcher\is-CUA9P.tmp	is-2G0AN.tmp
File created	C:\Program Files (x86)\elSearcher\is-S3ARJ.tmp	is-2G0AN.tmp
File opened for modification	C:\Program Files (x86)\elSearcher\elsearcher54.exe	is-2G0AN.tmp
File created	C:\Program Files (x86)\elSearcher\is-A9FMF.tmp	is-2G0AN.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
1944	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1372	elsearcher54.exe
1372	elsearcher54.exe
1372	elsearcher54.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1944	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1900 wrote to memory of 2016	1900	file.exe	27
PID 1900 wrote to memory of 2016	1900	file.exe	27
PID 1900 wrote to memory of 2016	1900	file.exe	27
PID 1900 wrote to memory of 2016	1900	file.exe	27
PID 1900 wrote to memory of 2016	1900	file.exe	27
PID 1900 wrote to memory of 2016	1900	file.exe	27
PID 1900 wrote to memory of 2016	1900	file.exe	27
PID 2016 wrote to memory of 1372	2016	is-2G0AN.tmp	28
PID 2016 wrote to memory of 1372	2016	is-2G0AN.tmp	28
PID 2016 wrote to memory of 1372	2016	is-2G0AN.tmp	28
PID 2016 wrote to memory of 1372	2016	is-2G0AN.tmp	28
PID 1372 wrote to memory of 744	1372	elsearcher54.exe	31
PID 1372 wrote to memory of 744	1372	elsearcher54.exe	31
PID 1372 wrote to memory of 744	1372	elsearcher54.exe	31
PID 1372 wrote to memory of 744	1372	elsearcher54.exe	31
PID 1372 wrote to memory of 1956	1372	elsearcher54.exe	32
PID 1372 wrote to memory of 1956	1372	elsearcher54.exe	32
PID 1372 wrote to memory of 1956	1372	elsearcher54.exe	32
PID 1372 wrote to memory of 1956	1372	elsearcher54.exe	32
PID 1956 wrote to memory of 1944	1956	cmd.exe	34
PID 1956 wrote to memory of 1944	1956	cmd.exe	34
PID 1956 wrote to memory of 1944	1956	cmd.exe	34
PID 1956 wrote to memory of 1944	1956	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:1900
- C:\Users\Admin\AppData\Local\Temp\is-D8VOR.tmp\is-2G0AN.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-D8VOR.tmp\is-2G0AN.tmp" /SL4 $70120 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2100657 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:2016
- - C:\Program Files (x86)\elSearcher\elsearcher54.exe
    "C:\Program Files (x86)\elSearcher\elsearcher54.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1372
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Q594Nuzt.exe
      4⤵
      Executes dropped EXE
      PID:744
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "elsearcher54.exe" /f & erase "C:\Program Files (x86)\elSearcher\elsearcher54.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1956
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "elsearcher54.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1944

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

elsearcher54.exe

Path C:\Program Files (x86)\elSearcher\elsearcher54.exe
Size 3.8MB
SHA256 4d4eefebe7714958f9b8b58d49d0f6240d8adfe3b6c796dee1580b33d5e1df67
MD5 e3c45f2bfaa68499cbabba1a8198e087
SHA1 e80709cd489b2c46e806bf86f0cea0a3c457cf52
SHA512 a13146e70c9853d324ea7bf92ee7237585e3843ff5033fd2c0388e6c60e6f16e32f55418029f6ae9e549ae4969eec3e7807972921d9f7bf132260231f7838b69
SSDEEP 49152:Tg2xLD+YtvYtzYtFYtbYthYtT1kQh3wP2dpuGXLLiMonOuoT0:Tg2xLD61kQh3wP2dYGXLmMonOXT0
MD5 SHA1 SHA512 SSDEEP

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elsearcher54.exe

Path C:\Program Files (x86)\elSearcher\elsearcher54.exe
Size 3.8MB
SHA256 4d4eefebe7714958f9b8b58d49d0f6240d8adfe3b6c796dee1580b33d5e1df67
MD5 e3c45f2bfaa68499cbabba1a8198e087
SHA1 e80709cd489b2c46e806bf86f0cea0a3c457cf52
SHA512 a13146e70c9853d324ea7bf92ee7237585e3843ff5033fd2c0388e6c60e6f16e32f55418029f6ae9e549ae4969eec3e7807972921d9f7bf132260231f7838b69
SSDEEP 49152:Tg2xLD+YtvYtzYtFYtbYthYtT1kQh3wP2dpuGXLLiMonOuoT0:Tg2xLD61kQh3wP2dYGXLmMonOXT0
MD5 SHA1 SHA512 SSDEEP

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is-2G0AN.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-D8VOR.tmp\is-2G0AN.tmp
Size 657KB
SHA256 e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f
MD5 7cd12c54a9751ca6eee6ab0c85fb68f5
SHA1 76562e9b7888b6d20d67addb5a90b68b54a51987
SHA512 27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc
SSDEEP 12288:CkxzRCUn4rP/37YzHXA6/YUKsGjQNw4qpRRpDWowphIxz:ZFRCUn4rP/37YzHXA6QJsoPtIpqxz
MD5 SHA1 SHA512 SSDEEP

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is-2G0AN.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-D8VOR.tmp\is-2G0AN.tmp
Size 657KB
SHA256 e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f
MD5 7cd12c54a9751ca6eee6ab0c85fb68f5
SHA1 76562e9b7888b6d20d67addb5a90b68b54a51987
SHA512 27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc
SSDEEP 12288:CkxzRCUn4rP/37YzHXA6/YUKsGjQNw4qpRRpDWowphIxz:ZFRCUn4rP/37YzHXA6QJsoPtIpqxz
MD5 SHA1 SHA512 SSDEEP

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Q594Nuzt.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Q594Nuzt.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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elsearcher54.exe

Path \Program Files (x86)\elSearcher\elsearcher54.exe
Size 3.8MB
SHA256 4d4eefebe7714958f9b8b58d49d0f6240d8adfe3b6c796dee1580b33d5e1df67
MD5 e3c45f2bfaa68499cbabba1a8198e087
SHA1 e80709cd489b2c46e806bf86f0cea0a3c457cf52
SHA512 a13146e70c9853d324ea7bf92ee7237585e3843ff5033fd2c0388e6c60e6f16e32f55418029f6ae9e549ae4969eec3e7807972921d9f7bf132260231f7838b69
SSDEEP 49152:Tg2xLD+YtvYtzYtFYtbYthYtT1kQh3wP2dpuGXLLiMonOuoT0:Tg2xLD61kQh3wP2dYGXLmMonOXT0
MD5 SHA1 SHA512 SSDEEP

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is-2G0AN.tmp

Path \Users\Admin\AppData\Local\Temp\is-D8VOR.tmp\is-2G0AN.tmp
Size 657KB
SHA256 e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f
MD5 7cd12c54a9751ca6eee6ab0c85fb68f5
SHA1 76562e9b7888b6d20d67addb5a90b68b54a51987
SHA512 27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc
SSDEEP 12288:CkxzRCUn4rP/37YzHXA6/YUKsGjQNw4qpRRpDWowphIxz:ZFRCUn4rP/37YzHXA6QJsoPtIpqxz
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-SLDSP.tmp\_isetup\_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-SLDSP.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-SLDSP.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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Q594Nuzt.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\Q594Nuzt.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/1372-71-0x0000000000400000-0x00000000015C3000-memory.dmp

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memory/1372-83-0x0000000000400000-0x00000000015C3000-memory.dmp

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memory/1372-72-0x0000000000400000-0x00000000015C3000-memory.dmp

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memory/1372-73-0x0000000000400000-0x00000000015C3000-memory.dmp

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memory/1372-79-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/1372-75-0x0000000000400000-0x00000000015C3000-memory.dmp

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memory/1372-86-0x0000000000400000-0x00000000015C3000-memory.dmp

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memory/1900-54-0x00000000759F1000-0x00000000759F3000-memory.dmp

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memory/1900-87-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/1900-55-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/1900-65-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/2016-74-0x00000000030E0000-0x00000000042A3000-memory.dmp

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memory/2016-70-0x00000000030E0000-0x00000000042A3000-memory.dmp

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